1
|
Kausel L, Michon M, Soto-Icaza P, Aboitiz F. A multimodal interface for speech perception: the role of the left superior temporal sulcus in social cognition and autism. Cereb Cortex 2024; 34:84-93. [PMID: 38696598 DOI: 10.1093/cercor/bhae066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/17/2024] [Accepted: 02/03/2024] [Indexed: 05/04/2024] Open
Abstract
Multimodal integration is crucial for human interaction, in particular for social communication, which relies on integrating information from various sensory modalities. Recently a third visual pathway specialized in social perception was proposed, which includes the right superior temporal sulcus (STS) playing a key role in processing socially relevant cues and high-level social perception. Importantly, it has also recently been proposed that the left STS contributes to audiovisual integration of speech processing. In this article, we propose that brain areas along the right STS that support multimodal integration for social perception and cognition can be considered homologs to those in the left, language-dominant hemisphere, sustaining multimodal integration of speech and semantic concepts fundamental for social communication. Emphasizing the significance of the left STS in multimodal integration and associated processes such as multimodal attention to socially relevant stimuli, we underscore its potential relevance in comprehending neurodevelopmental conditions characterized by challenges in social communication such as autism spectrum disorder (ASD). Further research into this left lateral processing stream holds the promise of enhancing our understanding of social communication in both typical development and ASD, which may lead to more effective interventions that could improve the quality of life for individuals with atypical neurodevelopment.
Collapse
Affiliation(s)
- Leonie Kausel
- Centro de Estudios en Neurociencia Humana y Neuropsicología (CENHN), Facultad de Psicología, Universidad Diego Portales, Chile, Vergara 275, 8370076 Santiago, Chile
| | - Maëva Michon
- Praxiling Laboratory, Joint Research Unit (UMR 5267), Centre National de la Recherche Scientifique (CNRS), Université Paul Valéry, Montpellier, France, Route de Mende, 34199 Montpellier cedex 5, France
- Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Chile, Marcoleta 391, 2do piso, 8330024 Santiago, Chile
- Laboratorio de Neurociencia Cognitiva y Evolutiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile, Marcoleta 391, 2do piso, 8330024 Santiago, Chile
| | - Patricia Soto-Icaza
- Centro de Investigación en Complejidad Social (CICS), Facultad de Gobierno, Universidad del Desarrollo, Chile, Av. Las Condes 12461, edificio 3, piso 3, 7590943, Las Condes Santiago, Chile
| | - Francisco Aboitiz
- Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Chile, Marcoleta 391, 2do piso, 8330024 Santiago, Chile
- Laboratorio de Neurociencia Cognitiva y Evolutiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile, Marcoleta 391, 2do piso, 8330024 Santiago, Chile
| |
Collapse
|
2
|
Kausel L, Zamorano F, Billeke P, Sutherland ME, Alliende MI, Larrain‐Valenzuela J, Soto‐Icaza P, Aboitiz F. Theta and alpha oscillations may underlie improved attention and working memory in musically trained children. Brain Behav 2024; 14:e3517. [PMID: 38702896 PMCID: PMC11069029 DOI: 10.1002/brb3.3517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 04/10/2024] [Accepted: 04/13/2024] [Indexed: 05/06/2024] Open
Abstract
INTRODUCTION Attention and working memory are key cognitive functions that allow us to select and maintain information in our mind for a short time, being essential for our daily life and, in particular, for learning and academic performance. It has been shown that musical training can improve working memory performance, but it is still unclear if and how the neural mechanisms of working memory and particularly attention are implicated in this process. In this work, we aimed to identify the oscillatory signature of bimodal attention and working memory that contributes to improved working memory in musically trained children. MATERIALS AND METHODS We recruited children with and without musical training and asked them to complete a bimodal (auditory/visual) attention and working memory task, whereas their brain activity was measured using electroencephalography. Behavioral, time-frequency, and source reconstruction analyses were made. RESULTS Results showed that, overall, musically trained children performed better on the task than children without musical training. When comparing musically trained children with children without musical training, we found modulations in the alpha band pre-stimuli onset and the beginning of stimuli onset in the frontal and parietal regions. These correlated with correct responses to the attended modality. Moreover, during the end phase of stimuli presentation, we found modulations correlating with correct responses independent of attention condition in the theta and alpha bands, in the left frontal and right parietal regions. CONCLUSIONS These results suggest that musically trained children have improved neuronal mechanisms for both attention allocation and memory encoding. Our results can be important for developing interventions for people with attention and working memory difficulties.
Collapse
Affiliation(s)
- Leonie Kausel
- Centro de Estudios en Neurociencia Humana y Neuropsicología, Facultad de PsicologíaUniversidad Diego PortalesSantiagoChile
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (CICS), Facultad de GobiernoUniversidad del DesarrolloSantiagoChile
- Centro Interdisciplinario de NeurocienciasPontificia Universidad Católica de ChileSantiagoChile
| | - F. Zamorano
- Unidad de Imágenes Cuantitativas Avanzadas, Departamento de ImágenesClínica Alemanade SantiagoSantiagoChile
- Facultad de Ciencias para el Cuidado de la SaludUniversidad San SebastiánSantiagoChile
- Laboratorio de Psiquiatría TraslacionalDepartamento de PsiquiatríaFacultad de MedicinaUniversidad de ChileSantiagoChile
| | - P. Billeke
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (CICS), Facultad de GobiernoUniversidad del DesarrolloSantiagoChile
| | - M. E. Sutherland
- Centro Interdisciplinario de NeurocienciasPontificia Universidad Católica de ChileSantiagoChile
| | - M. I. Alliende
- Centro Interdisciplinario de NeurocienciasPontificia Universidad Católica de ChileSantiagoChile
| | - J. Larrain‐Valenzuela
- Centro de Investigación en Complejidad Social (CICS), Facultad de GobiernoUniversidad del DesarrolloSantiagoChile
| | - P. Soto‐Icaza
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (CICS), Facultad de GobiernoUniversidad del DesarrolloSantiagoChile
| | - F. Aboitiz
- Centro Interdisciplinario de NeurocienciasPontificia Universidad Católica de ChileSantiagoChile
| |
Collapse
|
3
|
Zamorano-Abramson J, Michon M, Hernández-Lloreda MV, Aboitiz F. Multimodal imitative learning and synchrony in cetaceans: A model for speech and singing evolution. Front Psychol 2023; 14:1061381. [PMID: 37138983 PMCID: PMC10150787 DOI: 10.3389/fpsyg.2023.1061381] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 02/13/2023] [Indexed: 05/05/2023] Open
Abstract
Multimodal imitation of actions, gestures and vocal production is a hallmark of the evolution of human communication, as both, vocal learning and visual-gestural imitation, were crucial factors that facilitated the evolution of speech and singing. Comparative evidence has revealed that humans are an odd case in this respect, as the case for multimodal imitation is barely documented in non-human animals. While there is evidence of vocal learning in birds and in mammals like bats, elephants and marine mammals, evidence in both domains, vocal and gestural, exists for two Psittacine birds (budgerigars and grey parrots) and cetaceans only. Moreover, it draws attention to the apparent absence of vocal imitation (with just a few cases reported for vocal fold control in an orangutan and a gorilla and a prolonged development of vocal plasticity in marmosets) and even for imitation of intransitive actions (not object related) in monkeys and apes in the wild. Even after training, the evidence for productive or "true imitation" (copy of a novel behavior, i.e., not pre-existent in the observer's behavioral repertoire) in both domains is scarce. Here we review the evidence of multimodal imitation in cetaceans, one of the few living mammalian species that have been reported to display multimodal imitative learning besides humans, and their role in sociality, communication and group cultures. We propose that cetacean multimodal imitation was acquired in parallel with the evolution and development of behavioral synchrony and multimodal organization of sensorimotor information, supporting volitional motor control of their vocal system and audio-echoic-visual voices, body posture and movement integration.
Collapse
Affiliation(s)
- José Zamorano-Abramson
- Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
- Grupo UCM de Psicobiología Social, Evolutiva y Comparada, Universidad Complutense de Madrid, Madrid, Spain
- *Correspondence: José Zamorano-Abramson,
| | - Maëva Michon
- Centro de Estudios en Neurociencia Humana y Neuropsicología, Facultad de Psicología, Universidad Diego Portales, Santiago, Chile
- Laboratory for Cognitive and Evolutionary Neuroscience, Department of Psychiatry, Faculty of Medicine, Interdisciplinary Center for Neuroscience, Pontificia Universidad Católica de, Santiago, Chile
- Maëva Michon,
| | - Ma Victoria Hernández-Lloreda
- Grupo UCM de Psicobiología Social, Evolutiva y Comparada, Universidad Complutense de Madrid, Madrid, Spain
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento, Facultad de Psicología, Campus de Somosaguas, Universidad Complutense de Madrid, Madrid, Spain
| | - Francisco Aboitiz
- Laboratory for Cognitive and Evolutionary Neuroscience, Department of Psychiatry, Faculty of Medicine, Interdisciplinary Center for Neuroscience, Pontificia Universidad Católica de, Santiago, Chile
| |
Collapse
|
4
|
Loyola-Navarro R, Moënne-Loccoz C, Vergara RC, Hyafil A, Aboitiz F, Maldonado PE. Voluntary self-initiation of the stimuli onset improves working memory and accelerates visual and attentional processing. Heliyon 2022; 8:e12215. [PMID: 36578387 PMCID: PMC9791366 DOI: 10.1016/j.heliyon.2022.e12215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 08/25/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022] Open
Abstract
The ability of an organism to voluntarily control the stimuli onset modulates perceptual and attentional functions. Since stimulus encoding is an essential component of working memory (WM), we conjectured that controlling the initiation of the perceptual process would positively modulate WM. To corroborate this proposition, we tested twenty-five healthy subjects in a modified-Sternberg WM task under three stimuli presentation conditions: an automatic presentation of the stimuli, a self-initiated presentation of the stimuli (through a button press), and a self-initiated presentation with random-delay stimuli onset. Concurrently, we recorded the subjects' electroencephalographic signals during WM encoding. We found that the self-initiated condition was associated with better WM accuracy, and earlier latencies of N1, P2 and P3 evoked potential components representing visual, attentional and mental review of the stimuli processes, respectively. Our work demonstrates that self-initiated stimuli enhance WM performance and accelerate early visual and attentional processes deployed during WM encoding. We also found that self-initiated stimuli correlate with an increased attentional state compared to the other two conditions, suggesting a role for temporal stimuli predictability. Our study remarks on the relevance of self-control of the stimuli onset in sensory, attentional and memory updating processing for WM.
Collapse
Affiliation(s)
- Rocio Loyola-Navarro
- Departamento de Neurociencia, Universidad de Chile, Santiago, Chile
- Biomedical Neuroscience Institute (BNI), Santiago, Chile
- Departamento de Educación Diferencial, Universidad Metropolitana de Ciencias de la Educación, Santiago, Chile
- Center for Advanced Research in Education, Institute of Education, Universidad de Chile, Santiago, Chile
| | - Cristóbal Moënne-Loccoz
- Departamento de Ciencias de la Salud, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro Nacional de Inteligencia Artificial (CENIA), Santiago, Chile
| | - Rodrigo C. Vergara
- Departamento de Kinesiología, Universidad Metropolitana de Ciencias de la Educación, Santiago, Chile
- Centro Nacional de Inteligencia Artificial (CENIA), Santiago, Chile
- Centro de Investigación en Educación, Universidad Metropolitana de Ciencias de la Educación (CIE-UMCE), Santiago, Chile
| | | | - Francisco Aboitiz
- Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pedro E. Maldonado
- Departamento de Neurociencia, Universidad de Chile, Santiago, Chile
- Biomedical Neuroscience Institute (BNI), Santiago, Chile
- Centro Nacional de Inteligencia Artificial (CENIA), Santiago, Chile
- Corresponding author.
| |
Collapse
|
5
|
Caglevic C, Rolfo C, Gil-Bazo I, Cardona A, Sapunar J, Hirsch FR, Gandara DR, Morgan G, Novello S, Garassino MC, Mountzios G, Leighl NB, Bretel D, Arrieta O, Addeo A, Liu SV, Corrales L, Subbiah V, Aboitiz F, Villarroel-Espindola F, Reyes-Cosmelli F, Morales R, Mahave M, Raez L, Alatorre J, Santos E, Ubillos L, Tan DS, Zielinski C. The Armed Conflict and the Impact on Patients With Cancer in Ukraine: Urgent Considerations. JCO Glob Oncol 2022; 8:e2200123. [PMID: 35994695 PMCID: PMC9470147 DOI: 10.1200/go.22.00123] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
On February 24, 2022, a war began within the Ukrainian borders. At least 3.0 million Ukrainian inhabitants have already fled the country. Critical infrastructure, including hospitals, has been damaged. Children with cancer were urgently transported to foreign countries, in an effort to minimize interruption of their life-saving treatments. Most adults did not have that option. War breeds cancer—delaying diagnosis, preventing treatment, and increasing risk. We project that a modest delay in care of only 4 months for five prevalent types of cancer will lead to an excess of over 3,600 cancer deaths in the subsequent years. It is critical that we establish plans to mitigate that risk as soon as possible. Ukraine conflict may cost 3600 lives or more because of a delay and lack of access for patients with cancer.![]()
Collapse
Affiliation(s)
- Christian Caglevic
- Cancer Research Department, Instituto Oncologico Fundacion Arturo Lopez Perez, Santiago, Chile
- Clinical Trials Unit, Instituto Oncologico Fundacion Arturo Lopez Perez, Santiago, Chile
| | - Christian Rolfo
- Clinical Research Center for Thoracic Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | | | - Andrés Cardona
- Luis Carlos Sarmiento Angulo Cancer Treatment and Research Center—CTIC, ONCOLGroup/FICMAC, Bogota, Colombia
| | - Jorge Sapunar
- Cancer Research Department, Instituto Oncologico Fundacion Arturo Lopez Perez, Santiago, Chile
| | - Fred R. Hirsch
- Center for Thoracic Oncology. Mount Sinai Cancer, Mount Sinai Health System, Icahn School of Medicine, Joe Lowe and Louis Price Professor of Medicine, Tisch Cancer Institute, New York, NY
| | - David R. Gandara
- Center for Experimental Therapeutics in Cancer, UC Davis Comprehensive Cancer Center, Translational and Clinical Research Program, University of Hawaii Cancer Center, International Society of Liquid Biopsy, Sacramento, CA
| | - Gilberto Morgan
- Skåne University Hospital, Department of Oncology, Lund, Sweden
| | - Silvia Novello
- Oncology Department, AOU San Luigi, University of Turin, Turin, Italy
| | | | - Giannis Mountzios
- 4th Oncology Department and Clinical Trials Unit Henry Dunant Hospital Center, Athens, Greece
| | - Natasha B. Leighl
- Medical Oncology Princess Margaret Cancer Centre, Department of Medicine, University of Toronto, IHPME, Dalla Lana School of Public Health, Toronto, Canada
| | | | - Oscar Arrieta
- Toracic Oncology Unit, Instituto Nacional de Cancerologia de Mexico, Mexico City, Mexico
| | - Alfredo Addeo
- Oncology department, University Hospital Geneva, Geneva, Switzerland
| | - Stephen V. Liu
- Lombardi Comprehensive Cancer Center of Georgetown University, Washington, DC
| | - Luis Corrales
- Centro de Investigación y Manejo del Cáncer (CIMCA), San José, Costa Rica
| | - Vivek Subbiah
- Department of Investigational Cancer Therapeutics, Division of Cancer Medicine, Medical Oncology Research, MD Anderson Cancer Network, Clinical Center For Targeted Therapy, Division of Pediatrics UT MD Anderson Cancer Center, Houston, TX
| | - Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias, Facultad de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | | | - Felipe Reyes-Cosmelli
- Clinical Trials Unit, Instituto Oncologico Fundacion Arturo Lopez Perez, Santiago, Chile
| | - Ricardo Morales
- Cancer Research Department, Instituto Oncologico Fundacion Arturo Lopez Perez, Santiago, Chile
- Clinical Trials Unit, Instituto Oncologico Fundacion Arturo Lopez Perez, Santiago, Chile
| | - Mauricio Mahave
- Cancer Research Department, Instituto Oncologico Fundacion Arturo Lopez Perez, Santiago, Chile
- Clinical Trials Unit, Instituto Oncologico Fundacion Arturo Lopez Perez, Santiago, Chile
| | - Luis Raez
- Memorial Cancer Institute/Memorial Health Care System, MCIFAU Florida Cancer Center of Excellence, Florida International University, Miami, FL
| | - Jorge Alatorre
- Instituto Nacional de Enfermedades Respiratorias (INER) Clínica de Oncología Torácica, México D.F., Mexico
| | - Edgardo Santos
- Florida Precision Oncology/a Division of Genesis Care USA, Research Services Thoracic and Head/Neck Cancer Programs Clinical, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL
| | - Luis Ubillos
- Instituto Nacional del Cancer, Montevideo, Uruguay
| | - Daniel S.W. Tan
- Department of Medical Oncology, National Cancer Centre Singapore, Singapore
| | - Christoph Zielinski
- Central European Cancer Center, Wiener Privatklinik, Vienna, and Central European Cooperative Oncology Group, HQ, Vienna, Austria
| |
Collapse
|
6
|
Michon M, Zamorano-Abramson J, Aboitiz F. Faces and Voices Processing in Human and Primate Brains: Rhythmic and Multimodal Mechanisms Underlying the Evolution and Development of Speech. Front Psychol 2022; 13:829083. [PMID: 35432052 PMCID: PMC9007199 DOI: 10.3389/fpsyg.2022.829083] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 03/07/2022] [Indexed: 11/24/2022] Open
Abstract
While influential works since the 1970s have widely assumed that imitation is an innate skill in both human and non-human primate neonates, recent empirical studies and meta-analyses have challenged this view, indicating other forms of reward-based learning as relevant factors in the development of social behavior. The visual input translation into matching motor output that underlies imitation abilities instead seems to develop along with social interactions and sensorimotor experience during infancy and childhood. Recently, a new visual stream has been identified in both human and non-human primate brains, updating the dual visual stream model. This third pathway is thought to be specialized for dynamics aspects of social perceptions such as eye-gaze, facial expression and crucially for audio-visual integration of speech. Here, we review empirical studies addressing an understudied but crucial aspect of speech and communication, namely the processing of visual orofacial cues (i.e., the perception of a speaker's lips and tongue movements) and its integration with vocal auditory cues. Along this review, we offer new insights from our understanding of speech as the product of evolution and development of a rhythmic and multimodal organization of sensorimotor brain networks, supporting volitional motor control of the upper vocal tract and audio-visual voices-faces integration.
Collapse
Affiliation(s)
- Maëva Michon
- Laboratory for Cognitive and Evolutionary Neuroscience, Department of Psychiatry, Faculty of Medicine, Interdisciplinary Center for Neuroscience, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de Estudios en Neurociencia Humana y Neuropsicología, Facultad de Psicología, Universidad Diego Portales, Santiago, Chile
| | - José Zamorano-Abramson
- Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Francisco Aboitiz
- Laboratory for Cognitive and Evolutionary Neuroscience, Department of Psychiatry, Faculty of Medicine, Interdisciplinary Center for Neuroscience, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
7
|
Soto-Icaza P, Beffara-Bret B, Vargas L, Aboitiz F, Billeke P. Differences in cortical processing of facial emotions in broader autism phenotype. PLoS One 2022; 17:e0262004. [PMID: 35041646 PMCID: PMC8765621 DOI: 10.1371/journal.pone.0262004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 12/15/2021] [Indexed: 11/25/2022] Open
Abstract
Autism Spectrum Disorder (ASD) is a heterogeneous condition that affects face perception. Evidence shows that there are differences in face perception associated with the processing of low spatial frequency (LSF) and high spatial frequency (HSF) of visual stimuli between non-symptomatic relatives of individuals with autism (broader autism phenotype, BAP) and typically developing individuals. However, the neural mechanisms involved in these differences are not fully understood. Here we tested whether face-sensitive event related potentials could serve as neuronal markers of differential spatial frequency processing, and whether these potentials could differentiate non-symptomatic parents of children with autism (pASD) from parents of typically developing children (pTD). To this end, we performed electroencephalographic recordings of both groups of parents while they had to recognize emotions of face pictures composed of the same or different emotions (happiness or anger) presented in different spatial frequencies. We found no significant differences in the accuracy between groups but lower amplitude modulation in the Late Positive Potential activity in pASD. Source analysis showed a difference in the right posterior part of the superior temporal region that correlated with ASD symptomatology of the child. These results reveal differences in brain processing of recognition of facial emotion in BAP that could be a precursor of ASD.
Collapse
Affiliation(s)
- Patricia Soto-Icaza
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (neuroCICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | | | | | - Francisco Aboitiz
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencias, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo Billeke
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (neuroCICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| |
Collapse
|
8
|
Innocenti GM, Schmidt K, Milleret C, Fabri M, Knyazeva MG, Battaglia-Mayer A, Aboitiz F, Ptito M, Caleo M, Marzi CA, Barakovic M, Lepore F, Caminiti R. The functional characterization of callosal connections. Prog Neurobiol 2021; 208:102186. [PMID: 34780864 PMCID: PMC8752969 DOI: 10.1016/j.pneurobio.2021.102186] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 11/05/2021] [Accepted: 11/11/2021] [Indexed: 12/12/2022]
Abstract
The functional characterization of callosal connections is informed by anatomical data. Callosal connections play a conditional driving role depending on the brain state and behavioral demands. Callosal connections play a modulatory function, in addition to a driving role. The corpus callosum participates in learning and interhemispheric transfer of sensorimotor habits. The corpus callosum contributes to language processing and cognitive functions.
The brain operates through the synaptic interaction of distant neurons within flexible, often heterogeneous, distributed systems. Histological studies have detailed the connections between distant neurons, but their functional characterization deserves further exploration. Studies performed on the corpus callosum in animals and humans are unique in that they capitalize on results obtained from several neuroscience disciplines. Such data inspire a new interpretation of the function of callosal connections and delineate a novel road map, thus paving the way toward a general theory of cortico-cortical connectivity. Here we suggest that callosal axons can drive their post-synaptic targets preferentially when coupled to other inputs endowing the cortical network with a high degree of conditionality. This might depend on several factors, such as their pattern of convergence-divergence, the excitatory and inhibitory operation mode, the range of conduction velocities, the variety of homotopic and heterotopic projections and, finally, the state-dependency of their firing. We propose that, in addition to direct stimulation of post-synaptic targets, callosal axons often play a conditional driving or modulatory role, which depends on task contingencies, as documented by several recent studies.
Collapse
Affiliation(s)
- Giorgio M Innocenti
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden; Signal Processing Laboratory (LTS5), École Polytechnique Fédérale (EPFL), Lausanne, Switzerland
| | - Kerstin Schmidt
- Brain Institute, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
| | - Chantal Milleret
- Center for Interdisciplinary Research in Biology, Collège de France, CNRS UMR 7241, INSERM U 1050, Label Memolife, PSL Research University, Paris, France
| | - Mara Fabri
- Department of Life and Environmental Sciences, Marche Polytechnic University, Ancona, Italy
| | - Maria G Knyazeva
- Laboratoire de Recherche en Neuroimagerie (LREN), Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland; Leenaards Memory Centre and Department of Clinical Neurosciences, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | | | - Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias and Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Maurice Ptito
- Harland Sanders Chair in Visual Science, École d'Optométrie, Université de Montréal, Montréal, Qc, Canada; Department of Neurology and Neurosurgery, Montréal Neurological Institute, McGill University, Montréal, Qc, Canada; Department of Neuroscience, University of Copenhagen, Copenhagen, Denmark
| | - Matteo Caleo
- Department of Biomedical Sciences, University of Padua, Italy; CNR Neuroscience Institute, Pisa, Italy
| | - Carlo A Marzi
- Department of Neuroscience, Biomedicine and Movement, University of Verona, Verona, Italy
| | - Muhamed Barakovic
- Signal Processing Laboratory (LTS5), École Polytechnique Fédérale (EPFL), Lausanne, Switzerland
| | - Franco Lepore
- Department of Psychology, Centre de Recherche en Neuropsychologie et Cognition, University of Montréal, Montréal, QC, Canada
| | - Roberto Caminiti
- Department of Physiology and Pharmacology, University of Rome SAPIENZA, Rome, Italy; Neuroscience and Behavior Laboratory, Istituto Italiano di Tecnologia, Rome, Italy.
| |
Collapse
|
9
|
Abstract
Reissner’s fiber (RF) is a secreted filament that floats in the neural canal of chordates. Since its discovery in 1860, there has been no agreement on its primary function, and its strong conservation across chordate species has remained a mystery for comparative neuroanatomists. Several findings, including the chemical composition and the phylogenetic history of RF, clinical observations associating RF with the development of the neural canal, and more recent studies suggesting that RF is needed to develop a straight vertebral column, may shed light on the functions of this structure across chordates. In this article, we will briefly review the evidence mentioned above to suggest a role of RF in the origin of fundamental innovations of the chordate body plan, especially the elongation of the neural tube and maintenance of the body axis. We will also mention the relevance of RF for medical conditions like hydrocephalus, scoliosis of the vertebral spine and possibly regeneration of the spinal cord.
Collapse
Affiliation(s)
- Francisco Aboitiz
- Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan F Montiel
- Centro de Investigación Biomédica, Facultad de Medicina, Universidad Diego Portales, Santiago, Chile
| |
Collapse
|
10
|
Kausel L, Zamorano F, Billeke P, Sutherland ME, Larrain-Valenzuela J, Stecher X, Schlaug G, Aboitiz F. Neural Dynamics of Improved Bimodal Attention and Working Memory in Musically Trained Children. Front Neurosci 2020; 14:554731. [PMID: 33132820 PMCID: PMC7578432 DOI: 10.3389/fnins.2020.554731] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 09/04/2020] [Indexed: 11/30/2022] Open
Abstract
Attention and working memory (WM) are core components of executive functions, and they can be enhanced by training. One activity that has shown to improve executive functions is musical training, but the brain networks underlying these improvements are not well known. We aimed to identify, using functional MRI (fMRI), these networks in children who regularly learn and play a musical instrument. Girls and boys aged 10–13 with and without musical training completed an attention and WM task while their brain activity was measured with fMRI. Participants were presented with a pair of bimodal stimuli (auditory and visual) and were asked to pay attention only to the auditory, only to the visual, or to both at the same time. The stimuli were afterward tested with a memory task in order to confirm attention allocation. Both groups had higher accuracy on items that they were instructed to attend, but musicians had an overall better performance on both memory tasks across attention conditions. In line with this, musicians showed higher activation than controls in cognitive control regions such as the fronto-parietal control network during all encoding phases. In addition, facilitated encoding of auditory stimuli in musicians was positively correlated with years of training and higher activity in the left inferior frontal gyrus and the left supramarginal gyrus, structures that support the phonological loop. Taken together, our results elucidate the neural dynamics that underlie improved bimodal attention and WM of musically trained children and contribute new knowledge to this model of brain plasticity.
Collapse
Affiliation(s)
- Leonie Kausel
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile.,Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (CICS), Universidad del Desarrollo, Santiago, Chile
| | - Francisco Zamorano
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (CICS), Universidad del Desarrollo, Santiago, Chile.,Unidad de Imágenes Cuantitativas Avanzadas, Cl nica Alemana, Universidad del Desarrollo, Santiago, Chile.,Departamento de Imágenes, Cl nica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Pablo Billeke
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (CICS), Universidad del Desarrollo, Santiago, Chile
| | - Mary E Sutherland
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Josefina Larrain-Valenzuela
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (CICS), Universidad del Desarrollo, Santiago, Chile
| | - Ximena Stecher
- Unidad de Imágenes Cuantitativas Avanzadas, Cl nica Alemana, Universidad del Desarrollo, Santiago, Chile.,Departamento de Imágenes, Cl nica Alemana, Universidad del Desarrollo, Santiago, Chile.,Neuroradiology, Radiology Department, Clinica Alemana de Santiago, Santiago, Chile
| | - Gottfried Schlaug
- Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
11
|
Zamorano F, Kausel L, Albornoz C, Lavin C, Figueroa-Vargas A, Stecher X, Aragón-Caqueo D, Carrasco X, Aboitiz F, Billeke P. Lateral Prefrontal Theta Oscillations Reflect Proactive Cognitive Control Impairment in Males With Attention Deficit Hyperactivity Disorder. Front Syst Neurosci 2020; 14:37. [PMID: 32625068 PMCID: PMC7314966 DOI: 10.3389/fnsys.2020.00037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 05/22/2020] [Indexed: 12/11/2022] Open
Abstract
Attention Deficit Hyperactivity Disorder (ADHD) is a common neuropsychiatric disorder in which children present prefrontal cortex (PFC) related functions deficit. Proactive cognitive control is a process that anticipates the requirement of cognitive control and crucially depends on the maturity of the PFC. Since this process is important to ADHD symptomatology, we here test the hypothesis that children with ADHD have proactive cognitive control impairments and that these impairments are reflected in the PFC oscillatory activity. We recorded EEG signals from 29 male children with ADHD and 25 typically developing (TD) male children while they performed a Go-Nogo task, where the likelihood of a Nogo stimulus increased while a sequence of consecutive Go stimuli elapsed. TD children showed proactive cognitive control by increasing their reaction time (RT) concerning the number of preceding Go stimuli, whereas children with ADHD did not. This adaptation was related to modulations in both P3a potential and lateral prefrontal theta oscillation for TD children. Children with ADHD as a group did not demonstrate either P3a or theta modulation. But, individual variation in theta activity was correlated with the ADHD symptomatology. The results depict a neurobiological mechanism of proactive cognitive control impairments in children with ADHD.
Collapse
Affiliation(s)
- Francisco Zamorano
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (neuroCICS), Universidad del Desarrollo, Santiago, Chile.,Unidad de Imágenes Cuantitativas Avanzadas, Clínica Alemana de Santiago, Universidad del Desarrollo, Santiago, Chile.,Departamento de Imágenes, Clínica Alemana, Facultad de Medicina, Universidad del Desarrollo, Santiago, Chile
| | - Leonie Kausel
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carlos Albornoz
- Facultad de Economía y Negocios, Universidad del Desarrollo, Santiago, Chile
| | - Claudio Lavin
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alejandra Figueroa-Vargas
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (neuroCICS), Universidad del Desarrollo, Santiago, Chile
| | - Ximena Stecher
- Unidad de Imágenes Cuantitativas Avanzadas, Clínica Alemana de Santiago, Universidad del Desarrollo, Santiago, Chile.,Departamento de Imágenes, Clínica Alemana, Facultad de Medicina, Universidad del Desarrollo, Santiago, Chile
| | | | - Ximena Carrasco
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile.,Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo Billeke
- Laboratorio de Neurociencia Social y Neuromodulación, Centro de Investigación en Complejidad Social (neuroCICS), Universidad del Desarrollo, Santiago, Chile
| |
Collapse
|
12
|
Ortega R, López V, Carrasco X, Escobar MJ, García AM, Parra MA, Aboitiz F. Neurocognitive mechanisms underlying working memory encoding and retrieval in Attention-Deficit/Hyperactivity Disorder. Sci Rep 2020; 10:7771. [PMID: 32385310 PMCID: PMC7210977 DOI: 10.1038/s41598-020-64678-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 04/14/2020] [Indexed: 11/09/2022] Open
Abstract
Working memory (WM) impairments in ADHD have been consistently reported along with deficits in attentional control. Yet, it is not clear which specific WM processes are affected in this condition. A deficient coupling between attention and WM has been reported. Nevertheless, most studies focus on the capacity to retain information rather than on the attention-dependent stages of encoding and retrieval. The current study uses a visual short-term memory binding task, measuring both behavioral and electrophysiological responses to characterize WM encoding, binding and retrieval comparing ADHD and non-ADHD matched adolescents. ADHD exhibited poorer accuracy and larger reaction times than non-ADHD on all conditions but especially when a change across encoding and test displays occurred. Binding manipulation affected equally both groups. Encoding P3 was larger in the non-ADHD group. Retrieval P3 discriminated change only in the non-ADHD group. Binding-dependent ERP modulations did not reveal group differences. Encoding and retrieval P3 were significantly correlated only in non-ADHD. These results suggest that while binding processes seem to be intact in ADHD, attention-related encoding and retrieval processes are compromised, resulting in a failure in the prioritization of relevant information. This new evidence can also inform recent theories of binding in visual WM.
Collapse
Affiliation(s)
- Rodrigo Ortega
- Departamento de Psicología, Facultad de Ciencias Sociales, Universidad de Chile, Santiago, Chile.,Center for Social and Cognitive Neuroscience (CSCN), Escuela de Psicología, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Vladimir López
- Escuela de Psicología, Facultad de Ciencias Sociales, Pontificia Universidad Católica de Chile, Santiago, Chile.,Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencias, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ximena Carrasco
- Servicio de Neurología y Psiquiatría, Hospital de Niños Dr. Luis Calvo Mackenna, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - María Josefina Escobar
- Center for Social and Cognitive Neuroscience (CSCN), Escuela de Psicología, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Adolfo M García
- Universidad de San Andrés, Buenos Aires, Argentina.,National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina.,Faculty of Education, National University of Cuyo, Mendoza, Argentina.,Departamento de Lingüística y Literatura, Facultad de Humanidades, Universidad de Santiago de Chile, Santiago, Chile
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK.,Facultad de psicología, Universidad Autónoma del Caribe, Barranquilla, Colombia
| | - Francisco Aboitiz
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencias, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
| |
Collapse
|
13
|
Aboitiz F, Montiel JF. Morphological evolution of the vertebrate forebrain: From mechanical to cellular processes. Evol Dev 2019; 21:330-341. [DOI: 10.1111/ede.12308] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 07/01/2019] [Accepted: 07/02/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Francisco Aboitiz
- Departamento de Psiquiatría, Escuela de MedicinaPontificia Universidad Católica de Chile Santiago Chile
- Centro Interdisciplinario de NeurocienciasPontificia Universidad Católica de Chile Santiago Chile
| | - Juan F. Montiel
- Centro de Investigación Biomédica, Facultad de MedicinaUniversidad Diego Portales Santiago Chile
| |
Collapse
|
14
|
Soto-Icaza P, Vargas L, Aboitiz F, Billeke P. Beta oscillations precede joint attention and correlate with mentalization in typical development and autism. Cortex 2019; 113:210-228. [PMID: 30677619 DOI: 10.1016/j.cortex.2018.12.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 10/30/2018] [Accepted: 12/17/2018] [Indexed: 01/08/2023]
Abstract
A precursor of adult social functioning is joint attention (JA), which is the capacity to share attention on an object with another person. JA precedes the development of the capacity to attribute mental states to others (i.e., mentalization or theory of mind). The neural mechanisms involved in the development of mentalization are not fully understood. Electroencephalographic recordings were made of children while they watched stimuli on a screen and their interaction with the experimenter was assessed. We tested whether neuronal activity preceding JA correlates with mentalization in typically developing (TD) children and whether this activity is impaired in children with autistic spectrum disorder (ASD) who evidence deficits in JA and mentalization skills. Both groups exhibited JA behavior with comparable frequency. TD children displayed a higher amplitude of negative central (Nc) event-related potential preceding JA behavior (∼500 msec after stimuli presentation), than did the ASD group. Previous to JA behavior, TD children demonstrated beta oscillatory activity in the temporoparietal region, while ASD children did not show an increase in beta activity. In both groups, the beta power correlated with mentalization, suggesting that this specific neuronal mechanism is involved in mentalization, which used during social interaction.
Collapse
Affiliation(s)
- Patricia Soto-Icaza
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencias, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
| | | | - Francisco Aboitiz
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencias, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo Billeke
- División de Neurociencias, Centro de Investigación en Complejidad Social (neuroCICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile.
| |
Collapse
|
15
|
Aboitiz F, Concha ML, González-Billault C, Mpodozis J. Editorial: From Ecology to Brain Development: Bridging Separate Evolutionary Paradigms. Front Neurosci 2018; 12:447. [PMID: 30008662 PMCID: PMC6034552 DOI: 10.3389/fnins.2018.00447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 06/12/2018] [Indexed: 12/02/2022] Open
Affiliation(s)
- Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Miguel L Concha
- Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Biomedical Neuroscience Institute, Santiago, Chile.,Geroscience Center for Brain Health and Metabolism, Santiago, Chile
| | - Christian González-Billault
- Geroscience Center for Brain Health and Metabolism, Santiago, Chile.,Laboratory of Cell and Neuronal Dynamics, Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile.,The Buck Institute for Research on Aging, Novato, CA, United States
| | - Jorge Mpodozis
- Laboratorio de Neurobiología y Biología del Conocer, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Santiago, Chile
| |
Collapse
|
16
|
Montiel JF, Aboitiz F. Homology in Amniote Brain Evolution: The Rise of Molecular Evidence. Brain Behav Evol 2018; 91:59-64. [PMID: 29860258 DOI: 10.1159/000489116] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 04/10/2018] [Indexed: 11/19/2022]
Affiliation(s)
- Juan F Montiel
- Instituto de Ciencias de la Salud, Universidad de O'Higgins, Rancagua, Chile.,Universidad Diego Portales, Santiago, Chile
| | - Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
17
|
Abstract
In this review article, I propose a continuous evolution from the auditory-vocal apparatus and its mechanisms of neural control in non-human primates, to the peripheral organs and the neural control of human speech. Although there is an overall conservatism both in peripheral systems and in central neural circuits, a few changes were critical for the expansion of vocal plasticity and the elaboration of proto-speech in early humans. Two of the most relevant changes were the acquisition of direct cortical control of the vocal fold musculature and the consolidation of an auditory-vocal articulatory circuit, encompassing auditory areas in the temporoparietal junction and prefrontal and motor areas in the frontal cortex. This articulatory loop, also referred to as the phonological loop, enhanced vocal working memory capacity, enabling early humans to learn increasingly complex utterances. The auditory-vocal circuit became progressively coupled to multimodal systems conveying information about objects and events, which gradually led to the acquisition of modern speech. Gestural communication accompanies the development of vocal communication since very early in human evolution, and although both systems co-evolved tightly in the beginning, at some point speech became the main channel of communication.
Collapse
Affiliation(s)
- Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
18
|
Abramson JZ, Hernández-Lloreda MV, García L, Colmenares F, Aboitiz F, Call J. Correction to ‘Imitation of novel conspecific and human speech sounds in the killer whale (
Orcinus orca
)’. Proc Biol Sci 2018; 285:rspb.2018.0287. [DOI: 10.1098/rspb.2018.0287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
19
|
Abramson JZ, Hernández-Lloreda MV, García L, Colmenares F, Aboitiz F, Call J. Imitation of novel conspecific and human speech sounds in the killer whale ( Orcinus orca). Proc Biol Sci 2018; 285:20172171. [PMID: 29386364 PMCID: PMC5805929 DOI: 10.1098/rspb.2017.2171] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 01/05/2018] [Indexed: 11/12/2022] Open
Abstract
Vocal imitation is a hallmark of human spoken language, which, along with other advanced cognitive skills, has fuelled the evolution of human culture. Comparative evidence has revealed that although the ability to copy sounds from conspecifics is mostly uniquely human among primates, a few distantly related taxa of birds and mammals have also independently evolved this capacity. Remarkably, field observations of killer whales have documented the existence of group-differentiated vocal dialects that are often referred to as traditions or cultures and are hypothesized to be acquired non-genetically. Here we use a do-as-I-do paradigm to study the abilities of a killer whale to imitate novel sounds uttered by conspecific (vocal imitative learning) and human models (vocal mimicry). We found that the subject made recognizable copies of all familiar and novel conspecific and human sounds tested and did so relatively quickly (most during the first 10 trials and three in the first attempt). Our results lend support to the hypothesis that the vocal variants observed in natural populations of this species can be socially learned by imitation. The capacity for vocal imitation shown in this study may scaffold the natural vocal traditions of killer whales in the wild.
Collapse
Affiliation(s)
- José Z Abramson
- Departamento de Psiquiatría, Facultad de Medicina and Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Marcoleta 391, Santiago, Chile
- Centro de Estudios Avanzados, Universidad de Playa Ancha, Valparaíso, Chile
- Facultad de Ciencias, Escuela de Medicina Veterinaria, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile
| | - Mª Victoria Hernández-Lloreda
- Departamento de Metodología de las Ciencias del Comportamiento, Facultad de Psicología
- Grupo UCM de Psicobiología Social, Evolutiva y Comparada, Universidad Complutense de Madrid, 28223, Madrid, Spain
| | - Lino García
- Departamento de Psicobiología, Facultad de Psicología, Campus de Somosaguas, Universidad Complutense de Madrid, 28223, Madrid, Spain
| | - Fernando Colmenares
- Grupo UCM de Psicobiología Social, Evolutiva y Comparada, Universidad Complutense de Madrid, 28223, Madrid, Spain
- Dpto. Teoría de la Señal y Comunicaciones ETSIST, UPM, Spain
| | - Francisco Aboitiz
- Departamento de Psiquiatría, Facultad de Medicina and Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Marcoleta 391, Santiago, Chile
| | - Josep Call
- School of Psychology and Neuroscience, University of St Andrews, St Mary's Quad, South Street, St Andrews, Fife KY16 9JP, UK
- Department of Developmental and Comparative Psychology, Max-Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
| |
Collapse
|
20
|
Larrain-Valenzuela J, Zamorano F, Soto-Icaza P, Carrasco X, Herrera C, Daiber F, Aboitiz F, Billeke P. Theta and Alpha Oscillation Impairments in Autistic Spectrum Disorder Reflect Working Memory Deficit. Sci Rep 2017; 7:14328. [PMID: 29085047 PMCID: PMC5662653 DOI: 10.1038/s41598-017-14744-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 10/17/2017] [Indexed: 11/09/2022] Open
Abstract
A dysfunction in the excitatory-inhibitory (E/I) coordination in neuronal assembly has been proposed as a possible neurobiological mechanism of Autistic Spectrum Disorder (ASD). However, the potential impact of this mechanism in cognitive performance is not fully explored. Since the main consequence of E/I dysfunction is an impairment in oscillatory activity and its underlying cognitive computations, we assessed the electroencephalographic activity of ASD and typically developing (TD) subjects during a working-memory task. We found that ASD subjects committed more errors than TD subjects. Moreover, TD subjects demonstrated a parametric modulation in the power of alpha and theta band while ASD subjects did not demonstrate significant modulations. The preceding leads to significant differences between the groups in both the alpha power placed on the occipital cortex and the theta power placed on the left premotor and the right prefrontal cortex. The impaired theta modulation correlated with autistic symptoms. The results indicated that ASD may present an alteration in the recruitment of the oscillatory activity during working-memory, and this alteration could be related to the physiopathology of the disorder.
Collapse
Affiliation(s)
- Josefina Larrain-Valenzuela
- División de Neurociencia, Centro de Investigación en Complejidad Social (neuroCICS), Universidad del Desarrollo, Av. Las Condes 12461, Las Condes, Santiago, 7590943, Chile
| | - Francisco Zamorano
- División de Neurociencia, Centro de Investigación en Complejidad Social (neuroCICS), Universidad del Desarrollo, Av. Las Condes 12461, Las Condes, Santiago, 7590943, Chile.,Unidad de Imágenes Cuantitativas Avanzadas, Departamento de Imágenes, Clínica Alemana de Santiago, Av. Vitacura 5951, Vitacura, 7650568, Chile
| | - Patricia Soto-Icaza
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Marcoleta 391, Santiago, 8330024, Chile
| | - Ximena Carrasco
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Marcoleta 391, Santiago, 8330024, Chile
| | - Claudia Herrera
- Sociedad de Psiquiatría y Neurología de la Infancia y Adolescencia de Chile, Esmeralda 678, Santiago, 8320053, Chile
| | - Francisca Daiber
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Marcoleta 391, Santiago, 8330024, Chile
| | - Francisco Aboitiz
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Marcoleta 391, Santiago, 8330024, Chile
| | - Pablo Billeke
- División de Neurociencia, Centro de Investigación en Complejidad Social (neuroCICS), Universidad del Desarrollo, Av. Las Condes 12461, Las Condes, Santiago, 7590943, Chile.
| |
Collapse
|
21
|
Zamorano F, Billeke P, Kausel L, Larrain J, Stecher X, Hurtado JM, López V, Carrasco X, Aboitiz F. Lateral prefrontal activity as a compensatory strategy for deficits of cortical processing in Attention Deficit Hyperactivity Disorder. Sci Rep 2017; 7:7181. [PMID: 28775285 PMCID: PMC5543103 DOI: 10.1038/s41598-017-07681-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 06/27/2017] [Indexed: 12/26/2022] Open
Abstract
Attention Deficit Hyperactivity Disorder (ADHD) is the most common neuropsychiatric disorder in childhood and is characterized by a delay of cortical maturation in frontal regions. In order to investigate interference control, which is a key function of frontal areas, a functional MRI study was conducted on 17 ADHD boys and 17 typically developing (TD) boys, while solving the multi source interference task (MSIT). This task consists of two conditions, a “congruent condition” and an “incongruent condition”. The latter requires to inhibit information that interferes with task-relevant stimuli. Behavioral results showed that ADHD subjects committed more errors than TD children. In addition, TD children presented a larger MSIT effect -a greater difference in reaction times between the incongruent and the congruent conditions- than ADHD children. Associated to the MSIT effect, neuroimaging results showed a significant enhancement in the activation of the right lateral prefrontal cortex (rlPFC) in ADHD than in TD subjects. Finally, ADHD subjects presented greater functional connectivity between rlPFC and bilateral orbitofrontal cortex than the TD group. This difference in connectivity correlated with worse performance in both groups. Our results could reflect a compensatory strategy of ADHD children resulting from their effort to maintain an adequate performance during MSIT.
Collapse
Affiliation(s)
- Francisco Zamorano
- División de Neurociencia, Centro de Investigación en Complejidad Social (neuroCICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile. .,Unidad de Imágenes Cuantitativas Avanzadas, Departamento de Imágenes, Clínica Alemana de Santiago, Santiago, Chile.
| | - Pablo Billeke
- División de Neurociencia, Centro de Investigación en Complejidad Social (neuroCICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Leonie Kausel
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Josefina Larrain
- División de Neurociencia, Centro de Investigación en Complejidad Social (neuroCICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Ximena Stecher
- Unidad de Imágenes Cuantitativas Avanzadas, Departamento de Imágenes, Clínica Alemana de Santiago, Santiago, Chile.,Departamento de Imágenes, Facultad de Medicina, Clinica Alemana Universidad del Desarrollo, Santiago, Chile
| | - Jose M Hurtado
- División de Neurociencia, Centro de Investigación en Complejidad Social (neuroCICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Vladimir López
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile.,Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ximena Carrasco
- Servicio de Neurología, Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Santiago, Chile.,Servicio de Neurología y Psiquiatría, Hospital Luis Calvo Mackenna, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
22
|
Abramson JZ, Hernández-Lloreda MV, Esteban JA, Colmenares F, Aboitiz F, Call J. Contextual imitation of intransitive body actions in a Beluga whale (Delphinapterus leucas): A "do as other does" study. PLoS One 2017. [PMID: 28636677 PMCID: PMC5479519 DOI: 10.1371/journal.pone.0178906] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Cetaceans are remarkable for exhibiting group-specific behavioral traditions or cultures in several behavioral domains (e.g., calls, behavioral tactics), and the question of whether they can be acquired socially, for example through imitative processes, remains open. Here we used a “Do as other does” paradigm to experimentally study the ability of a beluga to imitate familiar intransitive (body-oriented) actions demonstrated by a conspecific. The participant was first trained to copy three familiar behaviors on command (training phase) and then was tested for her ability to generalize the learned “Do as the other does” command to a different set of three familiar behaviors (testing phase). We found that the beluga (1) was capable of learning the copy command signal “Do what-the-other-does”; (2) exhibited high matching accuracy for trained behaviors (mean = 84% of correct performance) after making the first successful copy on command; (3) copied successfully the new set of three familiar generalization behaviors that were untrained to the copy command (range of first copy = 12 to 35 trials); and (4) deployed a high level of matching accuracy (mean = 83%) after making the first copy of an untrained behavior on command. This is the first evidence of contextual imitation of intransitive (body-oriented) movements in the beluga and adds to the reported findings on production imitation of sounds in this species and production imitation of sounds and motor actions in several cetaceans, especially dolphins and killer whales. Collectively these findings highlight the notion that cetaceans have a natural propensity at skillfully and proficiently matching the sounds and body movements demonstrated by conspecifics, a fitness-enhancing propensity in the context of cooperative hunting and anti-predatory defense tactics, and of alliance formation strategies that have been documented in these species’ natural habitats. Future work should determine if the beluga can also imitate novel motor actions.
Collapse
Affiliation(s)
- José Z. Abramson
- Departamento de Psiquiatría, Facultad de Medicina, y Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de Estudios Avanzados, Universidad de Playa Ancha, Valparaíso, Chile
- Grupo UCM de Estudio del Comportamiento Animal y Humano Universidad Complutense de Madrid, Madrid, Spain
- * E-mail:
| | - Mª Victoria Hernández-Lloreda
- Grupo UCM de Estudio del Comportamiento Animal y Humano Universidad Complutense de Madrid, Madrid, Spain
- Departamento de Metodología de las Ciencias del Comportamiento, Facultad de Psicología, Campus de Somosaguas, Universidad Complutense de Madrid, Madrid, Spain
| | - José-Antonio Esteban
- Research Department, Parques Reunidos Valencia S. A. Oceanogràfic, Ciudad de las Artes y las Ciencias, Valencia, Spain
| | - Fernando Colmenares
- Grupo UCM de Estudio del Comportamiento Animal y Humano Universidad Complutense de Madrid, Madrid, Spain
- Departamento de Psicobiología, Facultad de Psicología, Campus de Somosaguas, Universidad Complutense de Madrid, Madrid, Spain
| | - Francisco Aboitiz
- Departamento de Psiquiatría, Facultad de Medicina, y Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Josep Call
- School of Psychology and Neuroscience, University of St Andrews, St Mary’s Quad, South Street, St Andrews, Fife KY, United Kingdom
- Department of Developmental and Comparative Psychology, Max-Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany
| |
Collapse
|
23
|
Villena-González M, Moënne-Loccoz C, Lagos RA, Alliende LM, Billeke P, Aboitiz F, López V, Cosmelli D. Attending to the heart is associated with posterior alpha band increase and a reduction in sensitivity to concurrent visual stimuli. Psychophysiology 2017; 54:1483-1497. [DOI: 10.1111/psyp.12894] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 03/30/2017] [Accepted: 04/06/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Mario Villena-González
- School of Psychology, Faculty of Social Sciences; Pontificia Universidad Católica de Chile; Santiago Chile
- Interdisciplinary Center for Neurosciences, Pontificia Universidad Católica de Chile; Santiago Chile
| | - Cristóbal Moënne-Loccoz
- School of Psychology, Faculty of Social Sciences; Pontificia Universidad Católica de Chile; Santiago Chile
- Department of Computer Sciences, School of Engineering; Pontificia Universidad Católica de Chile; Santiago Chile
| | - Rodrigo A. Lagos
- Universidad Autónoma de Chile; Santiago Chile
- School of Public Health; Universidad de Chile; Santiago Chile
| | - Luz M. Alliende
- School of Psychology, Faculty of Social Sciences; Pontificia Universidad Católica de Chile; Santiago Chile
| | - Pablo Billeke
- Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo; Santiago Chile
| | - Francisco Aboitiz
- Department of Psychiatry, School of Medicine; Pontificia Universidad Católica de Chile; Santiago Chile
- Interdisciplinary Center for Neurosciences, Pontificia Universidad Católica de Chile; Santiago Chile
| | - Vladimir López
- School of Psychology, Faculty of Social Sciences; Pontificia Universidad Católica de Chile; Santiago Chile
- Interdisciplinary Center for Neurosciences, Pontificia Universidad Católica de Chile; Santiago Chile
| | - Diego Cosmelli
- School of Psychology, Faculty of Social Sciences; Pontificia Universidad Católica de Chile; Santiago Chile
- Interdisciplinary Center for Neurosciences, Pontificia Universidad Católica de Chile; Santiago Chile
| |
Collapse
|
24
|
Puddu G, Rothhammer P, Carrasco X, Aboitiz F, Rothhammer F. [Heritability and genetic comorbidity of attention deficit disorder with hyperactivity]. Rev Med Chil 2017; 145:368-372. [PMID: 28548194 DOI: 10.4067/s0034-98872017000300011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 08/08/2016] [Indexed: 11/17/2022]
Abstract
This review aims to summarize information about the genetic etiology of attention deficit disorder with hyperactivity (ADHD), with particular reference to the contributions of our research group. We also discuss the genetic comorbidity estimated from genome-wide single nucleotide polymorphisms (SNP´s) between ADHD and major psychiatric disorders such as schizophrenia (E), major depressive disorder (MDD), bipolar disorder (BD) and autism spectrum disorders (ASD). A high genetic comorbidity was found between E and BD (46%), a moderate comorbidity between MDD and E, MDD and BD and MDD and ADHD (18%, 22% and 10% respectively) and a low comorbidity between E and ASD (2.5%). Furthermore, we show evidence concerning the genetic determination of psychiatric diseases, which is significantly lower when it is estimated from genome-wide SNP´s rather than using traditional quantitative genetic methodology (ADHD = E = 23%, BD = 25%, MDD = 21% and ASD = 17%). From an evolutionary perspective, we suggest that behavioral traits such as hyperactivity, inattention and impulsivity, which play a role in ADHD and perhaps also other hereditary traits which are part of major psychiatric disorders, could have had a high adaptive value during the early stages of the evolution of Homo sapiens. However, they became progressively less adaptive and definitively disadvantageous, to the extreme that they are involved in frequently diagnosed major psychiatric disorders.
Collapse
Affiliation(s)
- Giannina Puddu
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica, Chile
| | - Paula Rothhammer
- Departamento de Psiquiatría y Centro de Investigaciones Médicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ximena Carrasco
- Servicio de Neurología y Psiquiatría, Hospital Luis Calvo Mackenna, Santiago, Chile
| | - Francisco Aboitiz
- Departamento de Psiquiatría y Centro de Investigaciones Médicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | |
Collapse
|
25
|
Isaac V, Olmedo D, Aboitiz F, Delano PH. Altered Cervical Vestibular-Evoked Myogenic Potential in Children with Attention Deficit and Hyperactivity Disorder. Front Neurol 2017; 8:90. [PMID: 28348547 PMCID: PMC5346589 DOI: 10.3389/fneur.2017.00090] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 02/24/2017] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Emerging evidence suggests that children with attention deficit and hyperactivity disorder (ADHD) present more difficulties in standing and walking balance than typically developing children. Most of previous studies have assessed these functions using postural and sensory organization tests showing differences in balance performance between control and ADHD children. However, to date, it is unknown whether these balance alterations are accompanied with vestibular dysfunction. The principal aim of this study is to evaluate vestibular otolith function in ADHD and matched control children. METHODS We assessed vestibular otolith function in children with ADHD and controls using the subjective visual vertical (SVV) bucket test and cervical vestibular-evoked myogenic potentials (cVEMPs). In addition, gait and balance were evaluated using the dynamic gait index (DGI) and computerized posturography. RESULTS Non-significant differences between groups were obtained in SVV evaluation. DGI results show lower scores for overall test performance in children with ADHD (p < 0.001), while computerized postural recordings showed significant differences for the limit of stability between groups (p = 0.02). cVEMPs in response to 500 Hz tone bursts presented at 100 dB were absent or reduced in children with ADHD, as revealed by differences in P1 and N1 peak-to-peak amplitudes between groups (p < 0.01). CONCLUSION These findings suggest that vestibular brainstem reflexes are altered in a subset of children with ADHD. We propose to include cVEMP reflexes in the clinical evaluation of ADHD patients.
Collapse
Affiliation(s)
- Valeria Isaac
- Otolaryngology Department, Clinical Hospital of the University of Chile, Santiago, Chile; Pediatric Diagnostic and Therapy Center, CERIL, Santiago, Chile
| | - Diego Olmedo
- Otolaryngology Department, Clinical Hospital of the University of Chile , Santiago , Chile
| | - Francisco Aboitiz
- Departamento de Psiquiatría and Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile , Santiago , Chile
| | - Paul H Delano
- Otolaryngology Department, Clinical Hospital of the University of Chile, Santiago, Chile; Physiology and Biophysics, ICBM, Faculty of Medicine, University of Chile, Santiago, Chile
| |
Collapse
|
26
|
Negrón-Oyarzo I, Lara-Vásquez A, Palacios-García I, Fuentealba P, Aboitiz F. Schizophrenia and reelin: a model based on prenatal stress to study epigenetics, brain development and behavior. Biol Res 2016; 49:16. [PMID: 26968981 PMCID: PMC4787713 DOI: 10.1186/s40659-016-0076-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 02/22/2016] [Indexed: 11/20/2022] Open
Abstract
Schizophrenia is a severe psychiatric disorder that results in a significant disability for the patient. The disorder is characterized by impairment of the adaptive orchestration of actions, a cognitive function that is mainly dependent on the prefrontal cortex. This behavioral deficit, together with cellular and neurophysiological alterations in the prefrontal cortex, as well as reduced density of GABAergic cells and aberrant oscillatory activity, all indicate structural and functional deficits of the prefrontal cortex in schizophrenia. Among the several risk factors for the development of schizophrenia, stress during the prenatal period has been identified as crucial. Thus, it is proposed that prenatal stress induces neurodevelopmental alterations in the prefrontal cortex that are expressed as cognitive impairment observed in schizophrenia. However, the precise mechanisms that link prenatal stress with the impairment of prefrontal cortex function is largely unknown. Reelin is an extracellular matrix protein involved in the development of cortical neural connectivity at embryonic stages, and in synaptic plasticity at postnatal stages. Interestingly, down-regulation of reelin expression has been associated with epigenetic changes in the reelin gene of the prefrontal cortex of schizophrenic patients. We recently showed that, similar to schizophrenic patients, prenatal stress induces down-expression of reelin associated with the methylation of its promoter in the rodent prefrontal cortex. These alterations were paralleled with altered prefrontal cortex functional connectivity and impairment in prefrontal cortex-dependent behavioral tasks. Therefore, considering molecular, cellular, physiological and behavioral evidence, we propose a unifying framework that links prenatal stress and prefrontal malfunction through epigenetic alterations of the reelin gene.
Collapse
Affiliation(s)
- Ignacio Negrón-Oyarzo
- Departamento de Psiquiatría, Escuela de Medicina, and Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ariel Lara-Vásquez
- Departamento de Psiquiatría, Escuela de Medicina, and Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ismael Palacios-García
- Departamento de Psiquiatría, Escuela de Medicina, and Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo Fuentealba
- Departamento de Psiquiatría, Escuela de Medicina, and Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile.
| | - Francisco Aboitiz
- Departamento de Psiquiatría, Escuela de Medicina, and Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile.
| |
Collapse
|
27
|
Affiliation(s)
- G M Innocenti
- Department of Neuroscience, Karolinska Institutet, Retzius Väg 8, 17177, Stockholm, Sweden,
| | | | | |
Collapse
|
28
|
Henríquez-Henríquez M, Villarroel L, Henríquez H, Zamorano F, Rothhammer F, Aboitiz F. Intratask Variability As a Correlate for DRD4 and SLC6A3 Variants: A Pilot Study in ADHD. J Atten Disord 2015; 19:987-96. [PMID: 22930791 DOI: 10.1177/1087054712455844] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
UNLABELLED Behavioral variability may be an ADHD key feature. Currently used ex-Gaussian/Fast Fourier Transform analyses characterize general distribution and oscillatory/rhythmic components of performance but are unable to demonstrate slow cumulative changes over entire tasks. OBJECTIVE To explore how performance of ADHD children and unaffected sibs gradually evolves in relation to genetic variants linked to ADHD. METHOD A total of 40 kids (20 ADHD-discordant sib pairs) between 8 and 13 years resolved a visual Go/NoGo with 10% NoGo probability. Variable number tandem repeats (VNTRs) at DRD4 and SLC6A3 were identified following standard protocols. Performance changes were assessed by linear/logistic mixed-effect models. RESULTS Models exploring SLC6A3 effects demonstrated less accentuated increments of response time (RT) (p = .046) and cumulative increments in the correct responses to "NoGo" (p = .00027) in 10R/10R participants. Models for DRD4 showed faster decline of correct responses to "Go" (p = .0078) in 2R/7R carriers. CONCLUSION Dynamical analysis of attention/inhibition measures may unravel new correlates to DRD4 and SLC6A3 variants.
Collapse
|
29
|
Abstract
There are remarkable similarities between the brains of mammals and birds in terms of microcircuit architecture, despite obvious differences in gross morphology and development. While in reptiles and birds the most expanding component (the dorsal ventricular ridge) displays an overall nuclear shape and derives from the lateral and ventral pallium, in mammals a dorsal pallial, six-layered isocortex shows the most remarkable elaboration. Regardless of discussions about possible homologies between mammalian and avian brains, a main question remains in explaining the emergence of the mammalian isocortex, because it represents a unique phenotype across amniotes. In this article, we propose that the origin of the isocortex was driven by behavioral adaptations involving olfactory driven goal-directed and navigating behaviors. These adaptations were linked with increasing sensory development, which provided selective pressure for the expansion of the dorsal pallium. The latter appeared as an interface in olfactory-hippocampal networks, contributing somatosensory information for navigating behavior. Sensory input from other modalities like vision and audition were subsequently recruited into this expanding region, contributing to multimodal associative networks.
Collapse
Affiliation(s)
- Francisco Aboitiz
- Departamento de Psiquiatría, Escuela de Medicina, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Juan F Montiel
- Facultad de Medicina, Centro de Investigación Biomédica, Universidad Diego Portales Santiago, Chile ; MRC Functional Genomics Unit, Department of Physiology, Anatomy and Genetics, University of Oxford Oxford, UK
| |
Collapse
|
30
|
Ray AM, Sitaram R, Rana M, Pasqualotto E, Buyukturkoglu K, Guan C, Ang KK, Tejos C, Zamorano F, Aboitiz F, Birbaumer N, Ruiz S. A subject-independent pattern-based Brain-Computer Interface. Front Behav Neurosci 2015; 9:269. [PMID: 26539089 PMCID: PMC4611064 DOI: 10.3389/fnbeh.2015.00269] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Accepted: 09/22/2015] [Indexed: 11/16/2022] Open
Abstract
While earlier Brain-Computer Interface (BCI) studies have mostly focused on modulating specific brain regions or signals, new developments in pattern classification of brain states are enabling real-time decoding and modulation of an entire functional network. The present study proposes a new method for real-time pattern classification and neurofeedback of brain states from electroencephalographic (EEG) signals. It involves the creation of a fused classification model based on the method of Common Spatial Patterns (CSPs) from data of several healthy individuals. The subject-independent model is then used to classify EEG data in real-time and provide feedback to new individuals. In a series of offline experiments involving training and testing of the classifier with individual data from 27 healthy subjects, a mean classification accuracy of 75.30% was achieved, demonstrating that the classification system at hand can reliably decode two types of imagery used in our experiments, i.e., happy emotional imagery and motor imagery. In a subsequent experiment it is shown that the classifier can be used to provide neurofeedback to new subjects, and that these subjects learn to “match” their brain pattern to that of the fused classification model in a few days of neurofeedback training. This finding can have important implications for future studies on neurofeedback and its clinical applications on neuropsychiatric disorders.
Collapse
Affiliation(s)
- Andreas M Ray
- Institute of Medical Psychology and Behavioral Neurobiology, Medical Faculty, University of Tübingen Tübingen, Germany
| | - Ranganatha Sitaram
- Institute of Medical Psychology and Behavioral Neurobiology, Medical Faculty, University of Tübingen Tübingen, Germany ; Institute for Medical and Biological Engineering, Schools of Engineering, Medicine and Biology, Pontificia Universidad Católica de Chile Santiago de Chile, Chile ; Department of Psychiatry and Section of Neuroscience, School of Medicine, Pontificia Universidad Católica de Chile Santiago de Chile, Chile
| | - Mohit Rana
- Institute of Medical Psychology and Behavioral Neurobiology, Medical Faculty, University of Tübingen Tübingen, Germany ; Graduate School of Neural and Behavioral Sciences, University of Tübingen Tübingen, Germany
| | - Emanuele Pasqualotto
- Institut de Recherche en Sciences Psychologiques, Université Catholique de Louvain Louvain-la-Neuve, Belgium
| | - Korhan Buyukturkoglu
- Institute of Medical Psychology and Behavioral Neurobiology, Medical Faculty, University of Tübingen Tübingen, Germany
| | - Cuntai Guan
- Neural and Biomedical Technology Department, Institute for Infocomm Research Singapore, Singapore
| | - Kai-Keng Ang
- Neural and Biomedical Technology Department, Institute for Infocomm Research Singapore, Singapore
| | - Cristián Tejos
- Department of Electrical Engineering and Biomedical Imaging Center, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Francisco Zamorano
- División de Neurociencia, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo Santiago, Chile ; Unidad de Imágenes Avanzadas, Clínica Alemana, Universidad del Desarrollo Santiago, Chile
| | - Francisco Aboitiz
- Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencia, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Niels Birbaumer
- Institute of Medical Psychology and Behavioral Neurobiology, Medical Faculty, University of Tübingen Tübingen, Germany ; Ospedale San Camillo, Istituto di Ricovero e Cura a Carattere Scientifico Venezia, Italy
| | - Sergio Ruiz
- Institute of Medical Psychology and Behavioral Neurobiology, Medical Faculty, University of Tübingen Tübingen, Germany ; Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencia, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile
| |
Collapse
|
31
|
Abstract
Together with a complex variety of behavioral, physiological, morphological, and neurobiological innovations, mammals are characterized by the development of an extensive isocortex (also called neocortex) that is both laminated and radially organized, as opposed to the brain of birds and reptiles. In this article, we will advance a developmental hypothesis in which the mechanisms of evolutionary brain growth remain partly conserved across amniotes (mammals, reptiles and birds), all based on Pax6 signaling or related morphogens. Despite this conservatism, only in mammals there is an additional upregulation of dorsal and anterior signaling centers (the cortical hem and the anterior forebrain, respectively) that promoted a laminar and a columnar structure into the neocortex. It is possible that independently, some birds also developed an upregulated dorsal pallium.
Collapse
Affiliation(s)
- Juan F Montiel
- Facultad de Medicina, Centro de Investigación Biomédica, Universidad Diego Portales Santiago, Chile ; Medical Research Council Functional Genomics Unit, Department of Physiology, Anatomy and Genetics, University of Oxford Oxford, UK
| | - Francisco Aboitiz
- Departamento de Psiquiatría, Escuela de Medicina, and Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile Santiago, Chile
| |
Collapse
|
32
|
Soto-Icaza P, Aboitiz F, Billeke P. Development of social skills in children: neural and behavioral evidence for the elaboration of cognitive models. Front Neurosci 2015; 9:333. [PMID: 26483621 PMCID: PMC4586412 DOI: 10.3389/fnins.2015.00333] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 09/04/2015] [Indexed: 01/10/2023] Open
Abstract
Social skills refer to a wide group of abilities that allow us to interact and communicate with others. Children learn how to solve social situations by predicting and understanding other's behaviors. The way in which humans learn to interact successfully with others encompasses a complex interaction between neural, behavioral, and environmental elements. These have a role in the accomplishment of positive developmental outcomes, including peer acceptance, academic achievement, and mental health. All these social abilities depend on widespread brain networks that are recently being studied by neuroscience. In this paper, we will first review the studies on this topic, aiming to clarify the behavioral and neural mechanisms related to the acquisition of social skills during infancy and their appearance in time. Second, we will briefly describe how developmental diseases like Autism Spectrum Disorders (ASD) can inform about the neurobiological mechanisms of social skills. We finally sketch a general framework for the elaboration of cognitive models in order to facilitate the comprehension of human social development.
Collapse
Affiliation(s)
- Patricia Soto-Icaza
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Facultad de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile ; Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Francisco Aboitiz
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Facultad de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile ; Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Pablo Billeke
- División de Neurociencia, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo Santiago, Chile
| |
Collapse
|
33
|
Billeke P, Armijo A, Castillo D, López T, Zamorano F, Cosmelli D, Aboitiz F. Paradoxical Expectation: Oscillatory Brain Activity Reveals Social Interaction Impairment in Schizophrenia. Biol Psychiatry 2015; 78:421-31. [PMID: 25861703 DOI: 10.1016/j.biopsych.2015.02.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 12/23/2014] [Accepted: 02/06/2015] [Indexed: 02/08/2023]
Abstract
BACKGROUND People with schizophrenia show social impairments that are related to functional outcomes. We tested the hypothesis that social interaction impairments in people with schizophrenia are related to alterations in the predictions of others' behavior and explored their underlying neurobiological mechanisms. METHODS Electroencephalography was performed in 20 patients with schizophrenia and 25 well-matched control subjects. Participants played as proposers in the repeated version of the Ultimatum Game believing that they were playing with another human or with a computer. The power of oscillatory brain activity was obtained by means of the wavelet transform. We performed a trial-by-trial correlation between the oscillatory activity and the risk of the offer. RESULTS Control subjects adapted their offers when playing with computers and tended to maintain their offers when playing with humans, as such revealing learning and bargaining strategies, respectively. People with schizophrenia presented the opposite pattern of behavior in both games. During the anticipation of others' responses, the power of alpha oscillations correlated with the risk of the offers made, in a different way in both games. Patients with schizophrenia presented a greater correlation in computer games than in human games; control subjects showed the opposite pattern. The alpha activity correlated with positive symptoms. CONCLUSIONS Our results reveal an alteration in social interaction in patients with schizophrenia that is related to oscillatory brain activity, suggesting maladjustment of expectation when patients face social and nonsocial agents. This alteration is related to psychotic symptoms and could guide further therapies for improving social functioning in patients with schizophrenia.
Collapse
Affiliation(s)
- Pablo Billeke
- Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile; Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Facultad de Medicina, and Interdisciplinary Center for Neuroscience, Santiago, Chile.
| | - Alejandra Armijo
- Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago, Chile
| | - Daniel Castillo
- Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago, Chile
| | - Tamara López
- Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago, Chile
| | - Francisco Zamorano
- Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile; Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Facultad de Medicina, and Interdisciplinary Center for Neuroscience, Santiago, Chile
| | - Diego Cosmelli
- Departamento de Psicología, Facultad de Ciencias Sociales, Pontificia Universidad Católica de Chile
| | - Francisco Aboitiz
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Facultad de Medicina, and Interdisciplinary Center for Neuroscience, Santiago, Chile
| |
Collapse
|
34
|
Abstract
Regardless of major anatomical and neurodevelopmental differences, the vertebrate isocortex shows a remarkably well-conserved organization. In the isocortex, reciprocal connections between excitatory and inhibitory neurons are distributed across multiple layers, encompassing modular, dynamical and recurrent functional networks during information processing. These dynamical brain networks are often organized in neuronal assemblies interacting through rhythmic phase relationships. Accordingly, these oscillatory interactions are observed across multiple brain scale levels, and they are associated with several sensory, motor, and cognitive processes. Most notably, oscillatory interactions are also found in the complete spectrum of vertebrates. Yet, it is unknown why this functional organization is so well conserved in evolution. In this perspective, we propose some ideas about how functional requirements of the isocortex can account for the evolutionary stability observed in microcircuits across vertebrates. We argue that isocortex architectures represent canonical microcircuits resulting from: (i) the early selection of neuronal architectures based on the oscillatory excitatory-inhibitory balance, which lead to the implementation of compartmentalized oscillations and (ii) the subsequent emergence of inferential coding strategies (predictive coding), which are able to expand computational capacities. We also argue that these functional constraints may be the result of several advantages that oscillatory activity contributes to brain network processes, such as information transmission and code reliability. In this manner, similarities in mesoscale brain circuitry and input-output organization between different vertebrate groups may reflect evolutionary constraints imposed by these functional requirements, which may or may not be traceable to a common ancestor.
Collapse
Affiliation(s)
- Conrado A Bosman
- Cognitive and Systems Neuroscience Group, Swammerdam Institute for Life Sciences, Center for Neuroscience, Faculty of Science, University of Amsterdam Amsterdam, Netherlands ; Facultad de Ciencias de la Salud, Universidad Autónoma de Chile Santiago, Chile
| | - Francisco Aboitiz
- Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencia, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile
| |
Collapse
|
35
|
Palacios-García I, Lara-Vásquez A, Montiel JF, Díaz-Véliz GF, Sepúlveda H, Utreras E, Montecino M, González-Billault C, Aboitiz F. Prenatal stress down-regulates Reelin expression by methylation of its promoter and induces adult behavioral impairments in rats. PLoS One 2015; 10:e0117680. [PMID: 25679528 PMCID: PMC4332679 DOI: 10.1371/journal.pone.0117680] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Accepted: 12/30/2014] [Indexed: 01/03/2023] Open
Abstract
Prenatal stress causes predisposition to cognitive and emotional disturbances and is a risk factor towards the development of neuropsychiatric conditions like depression, bipolar disorders and schizophrenia. The extracellular protein Reelin, expressed by Cajal-Retzius cells during cortical development, plays critical roles on cortical lamination and synaptic maturation, and its deregulation has been associated with maladaptive conditions. In the present study, we address the effect of prenatal restraint stress (PNS) upon Reelin expression and signaling in pregnant rats during the last 10 days of pregnancy. Animals from one group, including control and PNS exposed fetuses, were sacrificed and analyzed using immunohistochemical, biochemical, cell biology and molecular biology approaches. We scored changes in the expression of Reelin, its signaling pathway and in the methylation of its promoter. A second group included control and PNS exposed animals maintained until young adulthood for behavioral studies. Using the optical dissector, we show decreased numbers of Reelin-positive neurons in cortical layer I of PNS exposed animals. In addition, neurons from PNS exposed animals display decreased Reelin expression that is paralleled by changes in components of the Reelin-signaling cascade, both in vivo and in vitro. Furthermore, PNS induced changes in the DNA methylation levels of the Reelin promoter in culture and in histological samples. PNS adult rats display excessive spontaneous locomotor activity, high anxiety levels and problems of learning and memory consolidation. No significant visuo-spatial memory impairment was detected on the Morris water maze. These results highlight the effects of prenatal stress on the Cajal-Retzius neuronal population, and the persistence of behavioral consequences using this treatment in adults, thereby supporting a relevant role of PNS in the genesis of neuropsychiatric diseases. We also propose an in vitro model that can yield new insights on the molecular mechanisms behind the effects of prenatal stress.
Collapse
MESH Headings
- Animals
- Animals, Newborn
- Antigens, Nuclear/genetics
- Antigens, Nuclear/metabolism
- Behavior, Animal
- Cell Adhesion Molecules, Neuronal/genetics
- Cell Adhesion Molecules, Neuronal/metabolism
- Cerebral Cortex/metabolism
- Cyclin-Dependent Kinase 5/metabolism
- DNA Methylation
- Disease Models, Animal
- Extracellular Matrix Proteins/genetics
- Extracellular Matrix Proteins/metabolism
- Female
- Maternal Exposure
- Mental Disorders/etiology
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/metabolism
- Neurons/metabolism
- Pregnancy
- Prenatal Exposure Delayed Effects
- Promoter Regions, Genetic
- Rats
- Reelin Protein
- Serine Endopeptidases/genetics
- Serine Endopeptidases/metabolism
- Signal Transduction
- Stress, Physiological
- Stress, Psychological
Collapse
Affiliation(s)
- Ismael Palacios-García
- Departamento de Psiquiatría, Escuela de Medicina, and Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
- Laboratory of Cell and Neuronal Dynamics (Cenedyn), Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | - Ariel Lara-Vásquez
- Departamento de Psiquiatría, Escuela de Medicina, and Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan F. Montiel
- Centro de Investigación Biomédica, Facultad de Medicina, Universidad Diego Portales, Santiago, Chile
| | - Gabriela F. Díaz-Véliz
- Programa de Farmacología Molecular y Clínica, Instituto de Ciencias Biomédicas, Universidad de Chile, Santiago, Chile
| | - Hugo Sepúlveda
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, and Fondo de Áreas Prioritarias (FONDAP) “Center for Genome Regulation”, Universidad Andrés Bello, Santiago, Chile
| | - Elías Utreras
- Laboratory of Cell and Neuronal Dynamics (Cenedyn), Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | - Martín Montecino
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, and Fondo de Áreas Prioritarias (FONDAP) “Center for Genome Regulation”, Universidad Andrés Bello, Santiago, Chile
| | - Christian González-Billault
- Laboratory of Cell and Neuronal Dynamics (Cenedyn), Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
- * E-mail: (CGB); (FA)
| | - Francisco Aboitiz
- Departamento de Psiquiatría, Escuela de Medicina, and Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
- * E-mail: (CGB); (FA)
| |
Collapse
|
36
|
Billeke P, Zamorano F, Chavez M, Cosmelli D, Aboitiz F. Functional cortical network in alpha band correlates with social bargaining. PLoS One 2014; 9:e109829. [PMID: 25286240 PMCID: PMC4186879 DOI: 10.1371/journal.pone.0109829] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 09/09/2014] [Indexed: 02/03/2023] Open
Abstract
Solving demanding tasks requires fast and flexible coordination among different brain areas. Everyday examples of this are the social dilemmas in which goals tend to clash, requiring one to weigh alternative courses of action in limited time. In spite of this fact, there are few studies that directly address the dynamics of flexible brain network integration during social interaction. To study the preceding, we carried out EEG recordings while subjects played a repeated version of the Ultimatum Game in both human (social) and computer (non-social) conditions. We found phase synchrony (inter-site-phase-clustering) modulation in alpha band that was specific to the human condition and independent of power modulation. The strength and patterns of the inter-site-phase-clustering of the cortical networks were also modulated, and these modulations were mainly in frontal and parietal regions. Moreover, changes in the individuals’ alpha network structure correlated with the risk of the offers made only in social conditions. This correlation was independent of changes in power and inter-site-phase-clustering strength. Our results indicate that, when subjects believe they are participating in a social interaction, a specific modulation of functional cortical networks in alpha band takes place, suggesting that phase synchrony of alpha oscillations could serve as a mechanism by which different brain areas flexibly interact in order to adapt ongoing behavior in socially demanding contexts.
Collapse
Affiliation(s)
- Pablo Billeke
- División Neurociencia de la Conducta, Centro de Investigación en Complejidad Social (CICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- * E-mail:
| | - Francisco Zamorano
- División Neurociencia de la Conducta, Centro de Investigación en Complejidad Social (CICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mario Chavez
- CNRS UMR-7225, Hôpital de la Salpêtrière, Paris, France
| | - Diego Cosmelli
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
37
|
García RR, Zamorano F, Aboitiz F. From imitation to meaning: circuit plasticity and the acquisition of a conventionalized semantics. Front Hum Neurosci 2014; 8:605. [PMID: 25152726 PMCID: PMC4126550 DOI: 10.3389/fnhum.2014.00605] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 07/20/2014] [Indexed: 12/04/2022] Open
Abstract
The capacity for language is arguably the most remarkable innovation of the human brain. A relatively recent interpretation prescribes that part of the language-related circuits were co-opted from circuitry involved in hand control—the mirror neuron system (MNS), involved both in the perception and in the execution of voluntary grasping actions. A less radical view is that in early humans, communication was opportunistic and multimodal, using signs, vocalizations or whatever means available to transmit social information. However, one point that is not yet clear under either perspective is how learned communication acquired a semantic property thereby allowing us to name objects and eventually describe our surrounding environment. Here we suggest a scenario involving both manual gestures and learned vocalizations that led to the development of a primitive form of conventionalized reference. This proposal is based on comparative evidence gathered from other species and on neurolinguistic evidence in humans, which points to a crucial role for vocal learning in the early development of language. Firstly, the capacity to direct the attention of others to a common object may have been crucial for developing a consensual referential system. Pointing, which is a ritualized grasping gesture, may have been crucial to this end. Vocalizations also served to generate joint attention among conversants, especially when combined with gaze direction. Another contributing element was the development of pantomimic actions resembling events or animals. In conjunction with this mimicry, the development of plastic neural circuits that support complex, learned vocalizations was probably a significant factor in the evolution of conventionalized semantics in our species. Thus, vocal imitations of sounds, as in onomatopoeias (words whose sound resembles their meaning), are possibly supported by mirror system circuits, and may have been relevant in the acquisition of early meanings.
Collapse
Affiliation(s)
- Ricardo R García
- Centro de Estudios Cognitivos, Facultad de Filosofía y Humanidades, Universidad de Chile Santiago, Chile
| | - Francisco Zamorano
- División de Neurociencia, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo Santiago, Chile
| | - Francisco Aboitiz
- Departamento de Psiquiatría, Escuela de Medicina, y Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile Santiago, Chile
| |
Collapse
|
38
|
Negrón-Oyarzo I, Neira D, Espinosa N, Fuentealba P, Aboitiz F. Prenatal Stress Produces Persistence of Remote Memory and Disrupts Functional Connectivity in the Hippocampal-Prefrontal Cortex Axis. Cereb Cortex 2014; 25:3132-43. [PMID: 24860018 DOI: 10.1093/cercor/bhu108] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Prenatal stress is a risk factor for the development of neuropsychiatric disorders, many of which are commonly characterized by an increased persistence of aversive remote memory. Here, we addressed the effect of prenatal stress on both memory consolidation and functional connectivity in the hippocampal-prefrontal cortex axis, a dynamical interplay that is critical for mnemonic processing. Pregnant mice of the C57BL6 strain were subjected to restraint stressed during the last week of pregnancy, and male offspring were behaviorally tested at adulthood for recent and remote spatial memory performance in the Barnes Maze test under an aversive context. Prenatal stress did not affect the acquisition or recall of recent memory. In contrast, it produced the persistence of remote spatial memory. Memory persistence was not associated with alterations in major network rhythms, such as hippocampal sharp-wave ripples (SWRs) or neocortical spindles. Instead, it was associated with a large decrease in the basal discharge activity of identified principal neurons in the medial prefrontal cortex (mPFC) as measured in urethane anesthetized mice. Furthermore, functional connectivity was disrupted, as the temporal coupling between neuronal discharge in the mPFC and hippocampal SWRs was decreased by prenatal stress. These results could be relevant to understand the biological basis of the persistence of aversive remote memories in stress-related disorders.
Collapse
Affiliation(s)
- Ignacio Negrón-Oyarzo
- Departamento de Psiquiatría, Facultad de Medicina, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - David Neira
- Departamento de Psiquiatría, Facultad de Medicina, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Nelson Espinosa
- Departamento de Psiquiatría, Facultad de Medicina, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo Fuentealba
- Departamento de Psiquiatría, Facultad de Medicina, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile Fundación San Juan de Dios, Barcelona, Spain
| | - Francisco Aboitiz
- Departamento de Psiquiatría, Facultad de Medicina, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
39
|
Aboitiz F, Ossandón T, Zamorano F, Palma B, Carrasco X. Irrelevant stimulus processing in ADHD: catecholamine dynamics and attentional networks. Front Psychol 2014; 5:183. [PMID: 24723897 PMCID: PMC3972460 DOI: 10.3389/fpsyg.2014.00183] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 02/14/2014] [Indexed: 12/25/2022] Open
Abstract
A cardinal symptom of attention deficit and hyperactivity disorder (ADHD) is a general distractibility where children and adults shift their attentional focus to stimuli that are irrelevant to the ongoing behavior. This has been attributed to a deficit in dopaminergic signaling in cortico-striatal networks that regulate goal-directed behavior. Furthermore, recent imaging evidence points to an impairment of large scale, antagonistic brain networks that normally contribute to attentional engagement and disengagement, such as the task-positive networks and the default mode network (DMN). Related networks are the ventral attentional network (VAN) involved in attentional shifting, and the salience network (SN) related to task expectancy. Here we discuss the tonic-phasic dynamics of catecholaminergic signaling in the brain, and attempt to provide a link between this and the activities of the large-scale cortical networks that regulate behavior. More specifically, we propose that a disbalance of tonic catecholamine levels during task performance produces an emphasis of phasic signaling and increased excitability of the VAN, yielding distractibility symptoms. Likewise, immaturity of the SN may relate to abnormal tonic signaling and an incapacity to build up a proper executive system during task performance. We discuss different lines of evidence including pharmacology, brain imaging and electrophysiology, that are consistent with our proposal. Finally, restoring the pharmacodynamics of catecholaminergic signaling seems crucial to alleviate ADHD symptoms; however, the possibility is open to explore cognitive rehabilitation strategies to top-down modulate network dynamics compensating the pharmacological deficits.
Collapse
Affiliation(s)
- Francisco Aboitiz
- Department of Psychiatry, Medical School, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Tomás Ossandón
- Department of Psychiatry, Medical School, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Francisco Zamorano
- División de Neurociencia, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo Santiago, Chile
| | - Bárbara Palma
- Programa de Doctorado en Psicoterapia, Pontificia Universidad Católica de Chile Santiago, Chile
| | - Ximena Carrasco
- Servicio de Neurología y Psiquiatría, Hospital de Niños Dr. Luis Calvo Mackenna, Facultad de Medicina, Universidad de Chile Santiago, Chile
| |
Collapse
|
40
|
Billeke P, Zamorano F, López T, Rodriguez C, Cosmelli D, Aboitiz F. Someone has to give in: theta oscillations correlate with adaptive behavior in social bargaining. Soc Cogn Affect Neurosci 2014; 9:2041-8. [PMID: 24493841 DOI: 10.1093/scan/nsu012] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
During social bargain, one has to both figure out the others' intentions and behave strategically in such a way that the others' behaviors will be consistent with one's expectations. To understand the neurobiological mechanisms underlying these behaviors, we used electroencephalography while subjects played as proposers in a repeated ultimatum game. We found that subjects adapted their offers to obtain more acceptances in the last round and that this adaptation correlated negatively with prefrontal theta oscillations. People with higher prefrontal theta activity related to a rejection did not adapt their offers along the game to maximize their earning. Moreover, between-subject variation in posterior theta oscillations correlated positively with how individual theta activity influenced the change of offer after a rejection, reflecting a process of behavioral adaptation to the others' demands. Interestingly, people adapted better their offers when they knew that they where playing against a computer, although the behavioral adaptation did not correlate with prefrontal theta oscillation. Behavioral changes between human and computer games correlated with prefrontal theta activity, suggesting that low adaptation in human games could be a strategy. Taken together, these results provide evidence for specific roles of prefrontal and posterior theta oscillations in social bargaining.
Collapse
Affiliation(s)
- Pablo Billeke
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Francisco Zamorano
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Tamara López
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Carlos Rodriguez
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Diego Cosmelli
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago 7610658, Chile, Instituto Psiquiátrico Dr. Horwitz Barak, Servicio de Salud Metropolitano Norte, Santiago 8431621, Chile, and Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| |
Collapse
|
41
|
Zamorano F, Billeke P, Hurtado JM, López V, Carrasco X, Ossandón T, Aboitiz F. Temporal constraints of behavioral inhibition: relevance of inter-stimulus interval in a Go-Nogo task. PLoS One 2014; 9:e87232. [PMID: 24489875 PMCID: PMC3906165 DOI: 10.1371/journal.pone.0087232] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 12/20/2013] [Indexed: 11/22/2022] Open
Abstract
The capacity to inhibit prepotent and automatic responses is crucial for proper cognitive and social development, and inhibitory impairments have been considered to be key for some neuropsychiatric conditions. One of the most used paradigms to analyze inhibitory processes is the Go-Nogo task (GNG). This task has been widely used in psychophysical and cognitive EEG studies, and more recently in paradigms using fMRI. However, a technical limitation is that the time resolution of fMRI is poorer than that of the EEG technique. In order to compensate for these temporal constraints, it has become common practice in the fMRI field to use longer inter-stimulus intervals (ISI) than those used in EEG protocols. Despite the noticeable temporal differences between these two techniques, it is currently assumed that both approaches assess similar inhibitory processes. We performed an EEG study using a GNG task with both short ISI (fast-condition, FC, as in EEG protocols) and long ISI (slow-condition, SC, as in fMRI protocols). We found that in the FC there was a stronger Nogo-N2 effect than in the SC. Moreover, in the FC, but not in the SC, the number of preceding Go trials correlated positively with the Nogo-P3 amplitude and with the Go trial reaction time; and negatively with commission errors. In addition, we found significant topographical differences for the Go-P3 elicited in FC and SC, which is interpreted in terms of different neurotransmitter dynamics. Taken together, our results provide evidence that frequency of stimulus presentation in the GNG task strongly modulates the behavioral response and the evoked EEG activity. Therefore, it is likely that short-ISI EEG protocols and long-ISI fMRI protocols do not assess equivalent inhibitory processes.
Collapse
Affiliation(s)
- Francisco Zamorano
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
- Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
- * E-mail:
| | - Pablo Billeke
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - José M. Hurtado
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Instituto de Sistemas Complejos de Valparaíso, Valparaíso, Chile
| | - Vladimir López
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ximena Carrasco
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
- Servicio de Neurología y Psiquiatría, Hospital Luis Calvo Mackenna, Facultad de Medicina, Universidad de Chile
| | - Tomás Ossandón
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Francisco Aboitiz
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
42
|
Henríquez-Henríquez MP, Billeke P, Henríquez H, Zamorano FJ, Rothhammer F, Aboitiz F. Intra-Individual Response Variability Assessed by Ex-Gaussian Analysis may be a New Endophenotype for Attention-Deficit/Hyperactivity Disorder. Front Psychiatry 2014; 5:197. [PMID: 25628575 PMCID: PMC4290481 DOI: 10.3389/fpsyt.2014.00197] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 12/20/2014] [Indexed: 11/13/2022] Open
Abstract
Intra-individual variability of response times (RTisv) is considered as potential endophenotype for attentional deficit/hyperactivity disorder (ADHD). Traditional methods for estimating RTisv lose information regarding response times (RTs) distribution along the task, with eventual effects on statistical power. Ex-Gaussian analysis captures the dynamic nature of RTisv, estimating normal and exponential components for RT distribution, with specific phenomenological correlates. Here, we applied ex-Gaussian analysis to explore whether intra-individual variability of RTs agrees with criteria proposed by Gottesman and Gould for endophenotypes. Specifically, we evaluated if normal and/or exponential components of RTs may (a) present the stair-like distribution expected for endophenotypes (ADHD > siblings > typically developing children (TD) without familiar history of ADHD) and (b) represent a phenotypic correlate for previously described genetic risk variants. This is a pilot study including 55 subjects (20 ADHD-discordant sibling-pairs and 15 TD children), all aged between 8 and 13 years. Participants resolved a visual Go/Nogo with 10% Nogo probability. Ex-Gaussian distributions were fitted to individual RT data and compared among the three samples. In order to test whether intra-individual variability may represent a correlate for previously described genetic risk variants, VNTRs at DRD4 and SLC6A3 were identified in all sibling-pairs following standard protocols. Groups were compared adjusting independent general linear models for the exponential and normal components from the ex-Gaussian analysis. Identified trends were confirmed by the non-parametric Jonckheere-Terpstra test. Stair-like distributions were observed for μ (p = 0.036) and σ (p = 0.009). An additional "DRD4-genotype" × "clinical status" interaction was present for τ (p = 0.014) reflecting a possible severity factor. Thus, normal and exponential RTisv components are suitable as ADHD endophenotypes.
Collapse
Affiliation(s)
- Marcela Patricia Henríquez-Henríquez
- Department of Clinical Laboratories, Pontificia Universidad Católica de Chile , Santiago , Chile ; Cognitive Neurosciences Laboratory, Department of Psychiatry, Pontificia Universidad Católica de Chile , Santiago , Chile
| | - Pablo Billeke
- Cognitive Neurosciences Laboratory, Department of Psychiatry, Pontificia Universidad Católica de Chile , Santiago , Chile ; Centro de Investigación en Complejidad Social (CICS), Facultad de Gobierno, Universidad del Desarrollo , Santiago , Chile
| | - Hugo Henríquez
- Medical Technology School, Universidad Mayor , Santiago , Chile
| | - Francisco Javier Zamorano
- Cognitive Neurosciences Laboratory, Department of Psychiatry, Pontificia Universidad Católica de Chile , Santiago , Chile ; Centro de Investigación en Complejidad Social (CICS), Facultad de Gobierno, Universidad del Desarrollo , Santiago , Chile
| | | | - Francisco Aboitiz
- Cognitive Neurosciences Laboratory, Department of Psychiatry, Pontificia Universidad Católica de Chile , Santiago , Chile
| |
Collapse
|
43
|
Abstract
The anatomical organization of the mammalian neocortex stands out among vertebrates for its laminar and columnar arrangement, featuring vertically oriented, excitatory pyramidal neurons. The evolutionary origin of this structure is discussed here in relation to the brain organization of other amniotes, i.e., the sauropsids (reptiles and birds). Specifically, we address the developmental modifications that had to take place to generate the neocortex, and to what extent these modifications were shared by other amniote lineages or can be considered unique to mammals. In this article, we propose a hypothesis that combines the control of proliferation in neural progenitor pools with the specification of regional morphogenetic gradients, yielding different anatomical results by virtue of the differential modulation of these processes in each lineage. Thus, there is a highly conserved genetic and developmental battery that becomes modulated in different directions according to specific selective pressures. In the case of early mammals, ecological conditions like nocturnal habits and reproductive strategies are considered to have played a key role in the selection of the particular brain patterning mechanisms that led to the origin of the neocortex.
Collapse
Affiliation(s)
- Francisco Aboitiz
- Departamento de Psiquiatría, Facultad de Medicina y Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile Santiago, Chile
| | | |
Collapse
|
44
|
Brunetti E, Maldonado PE, Aboitiz F. Phase synchronization of delta and theta oscillations increase during the detection of relevant lexical information. Front Psychol 2013; 4:308. [PMID: 23785341 PMCID: PMC3684765 DOI: 10.3389/fpsyg.2013.00308] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Accepted: 05/14/2013] [Indexed: 11/21/2022] Open
Abstract
During monitoring of the discourse, the detection of the relevance of incoming lexical information could be critical for its incorporation to update mental representations in memory. Because, in these situations, the relevance for lexical information is defined by abstract rules that are maintained in memory, a central aspect to elucidate is how an abstract level of knowledge maintained in mind mediates the detection of the lower-level semantic information. In the present study, we propose that neuronal oscillations participate in the detection of relevant lexical information, based on “kept in mind” rules deriving from more abstract semantic information. We tested our hypothesis using an experimental paradigm that restricted the detection of relevance to inferences based on explicit information, thus controlling for ambiguities derived from implicit aspects. We used a categorization task, in which the semantic relevance was previously defined based on the congruency between a kept in mind category (abstract knowledge), and the lexical semantic information presented. Our results show that during the detection of the relevant lexical information, phase synchronization of neuronal oscillations selectively increases in delta and theta frequency bands during the interval of semantic analysis. These increments occurred irrespective of the semantic category maintained in memory, had a temporal profile specific for each subject, and were mainly induced, as they had no effect on the evoked mean global field power. Also, recruitment of an increased number of pairs of electrodes was a robust observation during the detection of semantic contingent words. These results are consistent with the notion that the detection of relevant lexical information based on a particular semantic rule, could be mediated by increasing the global phase synchronization of neuronal oscillations, which may contribute to the recruitment of an extended number of cortical regions.
Collapse
Affiliation(s)
- Enzo Brunetti
- Departamento de Psiquiatría, Facultad de Medicina, Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile Santiago, Chile ; Programa de Fisiología y Biofísica, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile Santiago, Chile
| | | | | |
Collapse
|
45
|
Rothhammer P, Lagos LP, Espinoza-Parrilla Y, Aboitiz F, Rothhammer F. [DRD4 dopamine receptor alleles in Chilean students of different ethnic origin and its relation with the risk for attention deficit/hyperactivity disorder]. Rev Med Chil 2013; 140:1276-81. [PMID: 23559284 DOI: 10.4067/s0034-98872012001000006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Accepted: 06/05/2012] [Indexed: 11/17/2022]
Abstract
BACKGROUND Worldwide diversity of alleles of D4 receptor gene (DRD4), linked to attention deficit hyperactivity disorder (ADHD), is mostly the result of length and single nucleotide polymorphisms in a 48-bp tandem repeat (VNTR). Alleles containing from two (2R) to eleven (11R) repeats have been identified. The most common are 4R, 7R and 2R. AIM To study the association of ADHD risk with DRD4 genotypes in Chilean students. SUBJECTS AND METHODS ADHD risk data were obtained through the abbreviated Conner's Scale for School Teachers in 66 Aymara children (11 cases and 55 controls), 91 Rapa-Nui children (60 cases ad 31 controls) and 96 children from a mixed urban population from Santiago (51 cases and 45 controls). DNA extracted from saliva was amplified by polymerase chain reaction (PCR) to genotype the DRD4 VNTR. RESULTS The distribution of DRD4 alleles reveals that, beneath the 4R allele, 7R exhibits the second highest frequencies in Aymara and Santiago children. In Polynesian children, 2R ranks after 4R. A statistically significant association between ADHD risk and 2R/4R genotype was identified in Polynesian children (p < 0.05; odds ratio = 3.7). CONCLUSIONS Different DRD4 genotypes are associated with ADHD phenotype in Chilean populations, probably as a consequence of their initial colonization history.
Collapse
Affiliation(s)
- Paula Rothhammer
- Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Chile.
| | | | | | | | | |
Collapse
|
46
|
Amoruso L, Gelormini C, Aboitiz F, Alvarez González M, Manes F, Cardona JF, Ibanez A. N400 ERPs for actions: building meaning in context. Front Hum Neurosci 2013; 7:57. [PMID: 23459873 PMCID: PMC3586681 DOI: 10.3389/fnhum.2013.00057] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Accepted: 02/12/2013] [Indexed: 11/13/2022] Open
Abstract
Converging neuroscientific evidence suggests the existence of close links between language and sensorimotor cognition. Accordingly, during the comprehension of meaningful actions, our brain would recruit semantic-related operations similar to those associated with the processing of language information. Consistent with this view, electrophysiological findings show that the N400 component, traditionally linked to the semantic processing of linguistic material, can also be elicited by action-related material. This review outlines recent data from N400 studies that examine the understanding of action events. We focus on three specific domains, including everyday action comprehension, co-speech gesture integration, and the semantics involved in motor planning and execution. Based on the reviewed findings, we suggest that both negativities (the N400 and the action-N400) reflect a common neurocognitive mechanism involved in the construction of meaning through the expectancies created by previous experiences and current contextual information. To shed light on how this process is instantiated in the brain, a testable contextual fronto-temporo-parietal model is proposed.
Collapse
Affiliation(s)
- Lucía Amoruso
- Laboratory of Experimental Psychology and Neuroscience, Institute of Cognitive Neurology, Favaloro University Buenos Aires, Argentina ; Institute of Neuroscience, Favaloro University Buenos Aires, Argentina ; National Scientific and Technical Research Council Buenos Aires, Argentina
| | | | | | | | | | | | | |
Collapse
|
47
|
Abstract
Social cognition consists of several skills which allow us to interact with other humans. These skills include social stimuli processing, drawing inferences about others' mental states, and engaging in social interactions. In recent years, there has been growing evidence of social cognitive impairments in patients with schizophrenia. Apparently, these impairments are separable from general neurocognitive impairments, such as attention, memory, and executive functioning. Moreover, social cognition seems to be a main determinant of functional outcome and could be used as a guide to elaborate new pharmacological and psychological treatments. However, most of these studies focus on individual mechanisms and observational perspectives; only few of them study schizophrenic patients during interactive situations. We first review evidences of social cognitive impairments both in social stimuli processing and in mental state attribution. We focus on the relationship between these functions and both general cognitive impairments and functional outcome. We next review recent game theory approaches to the study of how social engagement occurs in schizophrenic patients. The advantage of using game theory is that game-oriented tasks can assess social decision making in an interactive everyday situation model. Finally, we review proposed theoretical models used to explain social alterations and their underlying biological mechanisms. Based on interactive studies, we propose a framework which takes into account the dynamic nature of social processes. Thus, understanding social skills as a result of dynamical systems could facilitate the development of both basic research and clinical applications oriented to psychiatric populations.
Collapse
Affiliation(s)
- Pablo Billeke
- Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile Santiago, Chile ; Departamento de Psiquiatría, Escuela de Medicina, Pontificia Universidad Católica de Chile Santiago, Chile
| | | |
Collapse
|
48
|
Abstract
Visual spatial orienting of attention towards exogenous cues has been one of the attentional functions considered to be spared in ADHD. Here we present a design in which 60 (30 ADHD) children, age: 10.9±1.4, were asked to covertly orient their attention to one or two (out of four) cued locations, and search for a target stimulus in one of these locations, while recording behavioral responses and EEG/ERP. In all conditions, ADHD children showed delayed reaction times and poorer behavioral performance. They also exhibited larger cue-elicited P2 but reduced CNV in the preparation stage. Larger amplitude of CNV predicted better performance in the task. Target-elicited N1 and selection negativity were also reduced in the ADHD group compared to non-ADHD. Groups also differed in the early and late P3 time-windows. The present results suggest that exogenous orienting of attention could be dysfunctional in ADHD under certain conditions. This limitation is not necessarily caused by an impairment of the orienting process itself, but instead by a difficulty in maintaining the relevant information acquired during the early preparation stage through the target processing stage, when it is really needed.
Collapse
Affiliation(s)
- Rodrigo Ortega
- Laboratorio de Neurociencia Cognitiva, Departamento de Psiquiatría, Facultad de Medicina, y Centro Interdisciplinario de Neurociencia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | | | | | | |
Collapse
|
49
|
Carrasco X, Daiber F, Rothhammer P, Huerta D, Andrade C, Opazo P, Paz Lagos L, Rothhammer F, Aboitiz F. Trastorno por déficit de atención e hiperactividad en niños aymara: primera aproximación clínica. Rev Med Chil 2012; 140:1409-16. [DOI: 10.4067/s0034-98872012001100005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2012] [Accepted: 06/11/2012] [Indexed: 11/17/2022]
|
50
|
Aboitiz F, Ossandón T, Zamorano F, Pablo Billeke Y. Balance en la cuerda floja: la neurobiología del trastorno por déficit atencional e hiperactividad. Revista Médica Clínica Las Condes 2012. [DOI: 10.1016/s0716-8640(12)70350-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|