1
|
Basile BM, Waters SJ, Murray EA. What does preferential viewing tell us about the neurobiology of recognition memory? Trends Neurosci 2024; 47:326-337. [PMID: 38582659 PMCID: PMC11096050 DOI: 10.1016/j.tins.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 02/09/2024] [Accepted: 03/14/2024] [Indexed: 04/08/2024]
Abstract
The two tests most widely used in nonhuman primates to assess the neurobiology of recognition memory produce conflicting results. Preferential viewing tests (e.g., visual paired comparison) produce robust impairments following hippocampal lesions, whereas matching tests (e.g., delayed nonmatching-to-sample) often show complete sparing. Here, we review the data, the proposed explanations for this discrepancy, and then critically evaluate those explanations. The most likely explanation is that preferential viewing tests are not a process-pure assessment of recognition memory, but also test elements of novelty-seeking, habituation, and motivation. These confounds likely explain the conflicting results. Thus, we propose that memory researchers should prefer explicit matching tests and readers interested in the neural substrates of recognition memory should give explicit matching tests greater interpretive weight.
Collapse
Affiliation(s)
| | - Spencer J Waters
- Interdisciplinary Program in Neuroscience, Georgetown University, Washington, DC, USA; Section on the Neurobiology of Learning and Memory, Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD, USA
| | - Elisabeth A Murray
- Section on the Neurobiology of Learning and Memory, Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD, USA.
| |
Collapse
|
2
|
Boeken OJ, Cieslik EC, Langner R, Markett S. Characterizing functional modules in the human thalamus: coactivation-based parcellation and systems-level functional decoding. Brain Struct Funct 2023; 228:1811-1834. [PMID: 36547707 PMCID: PMC10516793 DOI: 10.1007/s00429-022-02603-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022]
Abstract
The human thalamus relays sensory signals to the cortex and facilitates brain-wide communication. The thalamus is also more directly involved in sensorimotor and various cognitive functions but a full characterization of its functional repertoire, particularly in regard to its internal anatomical structure, is still outstanding. As a putative hub in the human connectome, the thalamus might reveal its functional profile only in conjunction with interconnected brain areas. We therefore developed a novel systems-level Bayesian reverse inference decoding that complements the traditional neuroinformatics approach towards a network account of thalamic function. The systems-level decoding considers the functional repertoire (i.e., the terms associated with a brain region) of all regions showing co-activations with a predefined seed region in a brain-wide fashion. Here, we used task-constrained meta-analytic connectivity-based parcellation (MACM-CBP) to identify thalamic subregions as seed regions and applied the systems-level decoding to these subregions in conjunction with functionally connected cortical regions. Our results confirm thalamic structure-function relationships known from animal and clinical studies and revealed further associations with language, memory, and locomotion that have not been detailed in the cognitive neuroscience literature before. The systems-level decoding further uncovered large systems engaged in autobiographical memory and nociception. We propose this novel decoding approach as a useful tool to detect previously unknown structure-function relationships at the brain network level, and to build viable starting points for future studies.
Collapse
Affiliation(s)
- Ole J Boeken
- Faculty of Life Sciences, Department of Molecular Psychology, Humboldt-Universität Zu Berlin, Rudower Chaussee 18, 12489, Berlin, Germany.
| | - Edna C Cieslik
- Institute of Systems Neuroscience, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
- Institute of Neuroscience and Medicine (INM-7: Brain and Behaviour), Research Centre Jülich, Jülich, Germany
| | - Robert Langner
- Institute of Systems Neuroscience, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
- Institute of Neuroscience and Medicine (INM-7: Brain and Behaviour), Research Centre Jülich, Jülich, Germany
| | - Sebastian Markett
- Faculty of Life Sciences, Department of Molecular Psychology, Humboldt-Universität Zu Berlin, Rudower Chaussee 18, 12489, Berlin, Germany
| |
Collapse
|
3
|
da Silva JSC, da Silva Albuquerque F, Freitas Barbosa F, da Silva-Sauer L, Fernández-Calvo B. Temporal and contextual binding in episodic memory in younger and older adults. APPLIED NEUROPSYCHOLOGY. ADULT 2023:1-9. [PMID: 36628443 DOI: 10.1080/23279095.2023.2165078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Episodic memory (EM) is a subsystem responsible for storing and recalling information about the basic elements of an event in a binding manner. Some approaches consider the temporal element to be one of the basic components of EM (WWWhen paradigm), while others consider that the contextual component is able in practice to better represent this cognitive ability (WWWhich paradigm). The relationship of both paradigms simultaneously with other instruments for measuring EM has not been investigated in healthy older adults. Thus, the present study examined the performance of young and older adults on questions based on the WWWhen and WWWhich paradigms, investigating the relationship of these questions with episodic (Remember) and non-episodic (Know) strategies. The results showed that for the younger adults both the questions demonstrated to only be significantly related with the "remember" strategy. On the other hand, older adults presented a response pattern in which the "WWWhich" questions used only episodic strategies for their correct resolution. Aging appears to promote a substantial reduction in both "Remember" and "Know" strategies, mainly those associated with solving tasks based on the temporal element of EM.
Collapse
Affiliation(s)
| | - Fabíola da Silva Albuquerque
- Laboratory of Memory and Cognition Studies, Department of Psychology, Federal University of Paraiba, Joao Pessoa, Brazil
| | - Flavio Freitas Barbosa
- Laboratory of Memory and Cognition Studies, Department of Psychology, Federal University of Paraiba, Joao Pessoa, Brazil
| | - Leandro da Silva-Sauer
- Laboratory of Aging and Neurodegenerative Disorder, Department of Psychology, Federal University of Paraiba, Joao Pessoa, Brazil
| | - Bernardino Fernández-Calvo
- Laboratory of Aging and Neurodegenerative Disorder, Department of Psychology, Federal University of Paraiba, Joao Pessoa, Brazil
- Department of Psychology, Faculty of Educational Sciences and Psychology, University of Córdoba, Córdoba, Spain
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| |
Collapse
|
4
|
Schaeffer JD, Newell C, Spann C, Siemens G, Liegey Dougall A. Inflammation, depression, and anxiety related to recognition memory in young adults. THE JOURNAL OF GENERAL PSYCHOLOGY 2023; 150:1-25. [PMID: 33729100 DOI: 10.1080/00221309.2021.1893638] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Previous research suggests that common modifiable health risk factors (e.g., depression, anxiety, metabolic illness, inflammation) may have an impact on memory. In the present study, we sought to investigate relationships between a number of these health risk factors and two components of recognition memory (recollection and familiarity). Data were analyzed for 96 healthy young adults between 17 and 25 years old. Recollection and familiarity were measured using an associative recognition procedure involving unitized and unrelated word pairs, and regression analyses were used to relate recognition memory performance to physical health (inflammation via plasma IL-6 levels, central obesity via waste-to-hip ratio, and heart rate variability) and mental health (depression via CESD-R, stress via PSS, and state and personality trait anxiety via STAI) measures of modifiable risk factors. Together, these health variables predicted an additional 19% of the variance in recollection beyond what was accounted for by familiarity, and 15% of the variance in familiarity beyond what was accounted for by recollection. These effects were primarily driven by inflammation, depression, and trait anxiety, which were each significant (p < .05) independent predictors of recognition. Higher levels of depression and inflammation were related to worse recollection yet better familiarity. Higher levels of trait anxiety were related to better recollection but were not related to familiarity. These findings demonstrate complex relationships between these modifiable health risk factors and recognition memory. Future longitudinal and cross-sectional research is needed to further explore these relationships and determine whether or not poor health causes these changes in recognition.
Collapse
Affiliation(s)
- James D Schaeffer
- Department of Psychology, Stephen F. Austin State University, Nacogdoches, TX, USA
| | - Cory Newell
- Department of Psychology, University of Texas at Arlington, Arlington, TX, USA.,LINK Research Lab, University of Texas at Arlington, Arlington, TX, USA
| | - Catherine Spann
- Institute of Cognitive Science, University of Colorado Boulder, Boulder, CO, USA
| | - George Siemens
- Department of Psychology, University of Texas at Arlington, Arlington, TX, USA.,LINK Research Lab, University of Texas at Arlington, Arlington, TX, USA
| | - Angela Liegey Dougall
- Department of Psychology, University of Texas at Arlington, Arlington, TX, USA.,LINK Research Lab, University of Texas at Arlington, Arlington, TX, USA
| |
Collapse
|
5
|
Fuentes M, Sales A, Charquero-Ballester M, García-Martí G, Meléndez JC, Espert R, Scheel M, Bauknecht HC, Simon K, Köpstein U, Gebauer S, Algarabel S. Impaired recollection and initially preserved familiarity in a patient with bilateral fornix transection following third ventricle colloid cyst removal: A two-year follow-up study. APPLIED NEUROPSYCHOLOGY. ADULT 2022:1-13. [PMID: 35917584 DOI: 10.1080/23279095.2022.2104162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE Recognition memory is widely accepted as a dual process-based model, namely familiarity and recollection. However, the location of their specific neurobiological substrates remains unclear. Similar to hippocampal damage, fornix damage has been associated with recollection memory but not familiarity memory deficits. To understand the neural basis of recognition memory, determining the importance of the fornix and its hippocampal connections is essential. METHODS Recognition memory was examined in a 45-year-old male who underwent a complete bilateral fornix section following the removal of a third ventricle colloid cyst. The application of familiarity and recollection for recognition memory decisions was investigated via an immediate and delayed associative recognition test and an immediate and delayed forced-choice task in the patient and a control group (N = 15) over a two-year follow-up period. Complete demographic, neuropsychological, neuropsychiatric, and neuroradiological characterizations of this patient were performed. RESULTS Persistent immediate and delayed verbal recollection memory deficits were observed in the patient. Moreover, delayed familiarity-based recognition memory declined gradually over the follow-up period, immediate familiarity-based recognition memory was unaffected, and reduced non-verbal memory improved. CONCLUSION The present findings support models that the extended hippocampal system, including the fornices, does not appear to play a role in familiarity memory but is particularly important for recollection memory. Moreover, our study suggests that bilateral fornix transection may be associated with relatively functional recovery of non-verbal memory.
Collapse
Affiliation(s)
- Manuel Fuentes
- Department of Geriatrics and Day Centre, Geriatric Orthopaedic Surgery Centre, Caritas-Klinik Dominikus, Berlin-Reinickendorf, Berlin, Germany
| | - Alicia Sales
- Department of Psychology, University of Valencia, Valencia, Spain
| | | | - Gracián García-Martí
- CIBER of Mental Health (CIBERSAM), Hospital Clínico Universitario de Valencia, Valencia, Spain
- Quirónsalud Hospital, Valencia, Spain
| | | | - Raul Espert
- Department of Psychology, University of Valencia, Valencia, Spain
| | - Michael Scheel
- Department of Neuroradiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Hans-Christian Bauknecht
- Department of Neuroradiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Katja Simon
- Department of Geriatrics and Day Centre, Geriatric Orthopaedic Surgery Centre, Caritas-Klinik Dominikus, Berlin-Reinickendorf, Berlin, Germany
| | - Uta Köpstein
- Department of Geriatrics and Day Centre, Geriatric Orthopaedic Surgery Centre, Caritas-Klinik Dominikus, Berlin-Reinickendorf, Berlin, Germany
| | - Sibylle Gebauer
- Department of Geriatrics and Day Centre, Geriatric Orthopaedic Surgery Centre, Caritas-Klinik Dominikus, Berlin-Reinickendorf, Berlin, Germany
| | | |
Collapse
|
6
|
Schaeffer JD, Chek CJW. Recollection, familiarity, and behavioural pattern separation: A correlational study. Memory 2022; 30:1248-1257. [DOI: 10.1080/09658211.2022.2101665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- James D. Schaeffer
- Department of Psychology, Stephen F. Austin State University, Nacogdoches, TX, USA
| | - Carmen Jia-Wen Chek
- Department of Psychology and Counseling, University of Texas at Tyler, Tyler, TX, USA
| |
Collapse
|
7
|
The anterior thalamic nuclei: core components of a tripartite episodic memory system. Nat Rev Neurosci 2022; 23:505-516. [PMID: 35478245 DOI: 10.1038/s41583-022-00591-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2022] [Indexed: 12/13/2022]
Abstract
Standard models of episodic memory focus on hippocampal-parahippocampal interactions, with the neocortex supplying sensory information and providing a final repository of mnemonic representations. However, recent advances have shown that other regions make distinct and equally critical contributions to memory. In particular, there is growing evidence that the anterior thalamic nuclei have a number of key cognitive functions that support episodic memory. In this article, we describe these findings and argue for a core, tripartite memory system, comprising a 'temporal lobe' stream (centred on the hippocampus) and a 'medial diencephalic' stream (centred on the anterior thalamic nuclei) that together act on shared cortical areas. We demonstrate how these distributed brain regions form complementary and necessary partnerships in episodic memory formation.
Collapse
|
8
|
Silva DG, Xavier GF. Anterior thalamic NMDA-induced damage impairs extrapolation relying on serial stimulus patterns, in rats. Neurobiol Learn Mem 2021; 185:107536. [PMID: 34634435 DOI: 10.1016/j.nlm.2021.107536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 09/27/2021] [Accepted: 10/04/2021] [Indexed: 11/17/2022]
Abstract
Extrapolation of serial stimulus patterns seems to depend upon identification and application of patterns relating sequences of stimuli stored in memory, thus allowing prediction of pending events never experienced before. There have been proposals that such a "generator of predictions system" would include the subiculum, mammillary bodies, anteroventral thalamus and cingulate cortex (e.g., Gray, 1982). The anteroventral thalamus (AVT) seems to be in a strategic position, both hodologically and experimentally, to allow testing of this hypothesis. This study investigated the effect of NMDA-induced damage to the anteroventral thalamus [part of the anterodorsal (AD) thalamus was also damaged in some animals], following stereotaxic minute topic microinjections, on the ability of male Wistar rats to extrapolate relying on serial stimulus patterns. Corresponding sham-operated controls received phosphate-saline buffer microinjections at the same stereotaxic coordinates. The subjects were trained to run through a straight alleyway along 31 sessions, one session per day, to get rewarded. Each session included four successive trials. Subjects exposed to the monotonic serial pattern received 14, 7, 3, 1 sunflower seeds along trials. Subjects exposed to the non-monotonic serial pattern received 14, 3, 7, 1 sunflower seeds. On the 32nd testing session, a fifth trial, never experienced before, was included immediately after the fourth trial. Sham-operated control subjects exposed to the monotonic serial pattern were expected to exhibit longer running times, since the content of their prediction in the fifth trial should be "less than 1 sunflower seeds". In contrast, control subjects exposed to the non-monotonic serial pattern were expected to exhibit shorter running times, since the content of their prediction would be "more than 1 sunflower seeds". Confirming these predictions, control subjects exposed to the monotonic serial pattern exhibited longer running times as compared to both, their own running times in previous trials within the same session and control subjects exposed to the non-monotonic schedule, thus indicating the occurrence of extrapolation. In contrast, AVT/AD lesioned subjects exposed to the monotonic schedule did not exhibit this increase in running times on the fifth trial, indicating lack of extrapolation. These results indicate that extrapolation relying on serial stimulus patterns is disrupted following extensive NMDA-induced damage to AVT and part of the AD. This represents the first consistent demonstration that the anterior thalamic nuclei are required for extrapolation of serial stimulus patterns and generation of predictions.
Collapse
Affiliation(s)
- Daniel G Silva
- Laboratory of Neuroscience and Behavior, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, SP, Brazil, 05508-090.
| | - Gilberto F Xavier
- Laboratory of Neuroscience and Behavior, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, SP, Brazil, 05508-090.
| |
Collapse
|
9
|
The specificity of thalamic alterations in Korsakoff's syndrome: Implications for the study of amnesia. Neurosci Biobehav Rev 2021; 130:292-300. [PMID: 34454914 DOI: 10.1016/j.neubiorev.2021.07.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 04/01/2021] [Accepted: 07/15/2021] [Indexed: 02/07/2023]
Abstract
The pathophysiological mechanisms behind amnesia are still unknown. Recent literature, through the study of patients with Alcohol Use Disorder with and without Korsakoff's syndrome, increasingly shows that physiological alterations to the thalamus have an important role in the development of amnesia. This review gives an overview of neuropsychological, neuropathological and neuroimaging contributions to the understanding of Korsakoff's syndrome, highlighting the central role of the thalamus in this amnesia. The thalamus being a multi-nucleus structure, the limitations regarding the loci, nature and alterations to specific nuclei are discussed, along with potential solutions. Finally, future directions for clinical research are laid out to unravel the intricacies inherent to amnesia. They consider the need to evaluate the physiological role of the thalamus, not only as an entity but also as part of a brain circuit through a more integrative approach.
Collapse
|
10
|
Brébion G, Núñez C, Lombardini F, Senior C, Sánchez Laforga AM, Siddi S, Usall J, Stephan-Otto C. Subclinical depression and anxiety impact verbal memory functioning differently in men and women -an fMRI study. J Psychiatr Res 2021; 140:308-315. [PMID: 34126425 DOI: 10.1016/j.jpsychires.2021.05.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 05/05/2021] [Accepted: 05/21/2021] [Indexed: 12/01/2022]
Abstract
BACKGROUND Depressive symptoms are known to affect memory efficiency in various populations. More specifically, several studies conducted in patients suffering from schizophrenia have indicated that memory efficiency is affected by depressed mood in female patients and by anxiety in male patients. We investigated, using neuroimaging techniques, whether similar gender-specific associations with subclinical depression and anxiety could be observed in a non-clinical sample. METHOD Forty-five healthy Spanish-speaking individuals (23 females) were administered a verbal memory task. Lists of high- and low-frequency words were presented. Immediate free recall was requested after the learning of each list, and a yes/no recognition task was completed during the acquisition of the fMRI data. RESULTS Regression analyses revealed that higher depression scores in women, and higher anxiety scores in men, were associated with poorer recall. In women, higher depression scores were further associated with decreased cerebral activity in the right temporoparietal junction, left inferior occipitotemporal gyrus, bilateral thalamus, and left anterior cingulate during correct recognition of target words. In men, anxiety scores were not associated with any cerebral activity. CONCLUSIONS Subclinical depression in women appears to affect memory efficiency by impacting cerebral regions specifically recruited for the cognitive demands of the task, as well as cerebral regions more generally involved in arousal, decision-making, and emotional regulation. Anxiety in men might impact the encoding memory processes. The results, although preliminary, suggest that gender differences may need to be taken into account when developing strategies for the cognitive and pharmacological remediation of memory impairment.
Collapse
Affiliation(s)
- Gildas Brébion
- Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain; Parc Sanitari Sant Joan de Déu, Sant Boi de Llobregat, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.
| | - Christian Núñez
- Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain; Parc Sanitari Sant Joan de Déu, Sant Boi de Llobregat, Spain
| | | | - Carl Senior
- School of Life & Health Sciences, Aston University, Birmingham, UK; University of Gibraltar, Gibraltar
| | | | - Sara Siddi
- Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain; Parc Sanitari Sant Joan de Déu, Sant Boi de Llobregat, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| | - Judith Usall
- Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain; Parc Sanitari Sant Joan de Déu, Sant Boi de Llobregat, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| | - Christian Stephan-Otto
- Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain; Parc Sanitari Sant Joan de Déu, Sant Boi de Llobregat, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| |
Collapse
|
11
|
Perry BAL, Lomi E, Mitchell AS. Thalamocortical interactions in cognition and disease: the mediodorsal and anterior thalamic nuclei. Neurosci Biobehav Rev 2021; 130:162-177. [PMID: 34216651 DOI: 10.1016/j.neubiorev.2021.05.032] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 04/12/2021] [Accepted: 05/17/2021] [Indexed: 01/15/2023]
Abstract
The mediodorsal thalamus (MD) and anterior thalamic nuclei (ATN) are two adjacent brain nodes that support our ability to make decisions, learn, update information, form and retrieve memories, and find our way around. The MD and PFC work in partnerships to support cognitive processes linked to successful learning and decision-making, while the ATN and extended hippocampal system together coordinate the encoding and retrieval of memories and successful spatial navigation. Yet, while these distinctions may appear to be segregated, both the MD and ATN together support our higher cognitive functions as they regulate and are influenced by interconnected fronto-temporal neural networks and subcortical inputs. Our review focuses on recent studies in animal models and in humans. This evidence is re-shaping our understanding of the importance of MD and ATN cortico-thalamocortical pathways in influencing complex cognitive functions. Given the evidence from clinical settings and neuroscience research labs, the MD and ATN should be considered targets for effective treatments in neuropsychiatric diseases and disorders and neurodegeneration.
Collapse
Affiliation(s)
- Brook A L Perry
- Department of Experimental Psychology, Oxford University, The Tinsley Building, Mansfield Road, OX1 3SR, United Kingdom
| | - Eleonora Lomi
- Department of Experimental Psychology, Oxford University, The Tinsley Building, Mansfield Road, OX1 3SR, United Kingdom
| | - Anna S Mitchell
- Department of Experimental Psychology, Oxford University, The Tinsley Building, Mansfield Road, OX1 3SR, United Kingdom.
| |
Collapse
|
12
|
Zhang A, Zhang L, Wang M, Zhang Y, Jiang F, Jin X, Du X, Ma J. Functional connectivity of thalamus in children with primary nocturnal enuresis: results from a resting-state fMRI study. Brain Imaging Behav 2021; 15:355-363. [PMID: 32125610 DOI: 10.1007/s11682-020-00262-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Primary nocturnal enuresis (PNE) is characterized by a low cure rate and a high reoccurrence rate, since its underlying mechanism remains unclear. Based on the recent studies that thalamus plays an important role in waking up a sleeping person, here we further investigate the functional connectivity (FC) information between thalamus and other brain regions, in order to make better understanding of the PNE's pathogenesis. In this study, we enrolled 30 children diagnosed with PNE and 30 typically developing children that are age and sex matched, the thalamus-based FC estimates were extracted at the resting-state. Experiments showed that for children with PNE, there were four brain regions found with a reduced connection efficiency with thalamus, that were cerebellum posterior lobe, frontal lobe, parietal lobe and precentral gyrus. It can be concluded that these relevant regions might induce an arousal disorder, and therefore further lead to PNE. This finding also provides a new insight in the pathophysiology of PNE.
Collapse
Affiliation(s)
- Anyi Zhang
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dong-Fang Road, 200127, Shanghai, People's Republic of China.,Shanghai Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,MOE-Shanghai Key Laboratory of Children's Environmental Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lichi Zhang
- Institute for Medical Imaging Technology, Shanghai Jiao Tong University, Shanghai, China
| | - Mengxing Wang
- Department of Physics, Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, 3663 North Zhong-Shan Road, Shanghai, 200062, China
| | - Yiwen Zhang
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dong-Fang Road, 200127, Shanghai, People's Republic of China.,Shanghai Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,MOE-Shanghai Key Laboratory of Children's Environmental Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fan Jiang
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dong-Fang Road, 200127, Shanghai, People's Republic of China.,Shanghai Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,MOE-Shanghai Key Laboratory of Children's Environmental Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xingming Jin
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dong-Fang Road, 200127, Shanghai, People's Republic of China.,Shanghai Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,MOE-Shanghai Key Laboratory of Children's Environmental Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoxia Du
- Department of Physics, Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, 3663 North Zhong-Shan Road, Shanghai, 200062, China.
| | - Jun Ma
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dong-Fang Road, 200127, Shanghai, People's Republic of China. .,Shanghai Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China. .,MOE-Shanghai Key Laboratory of Children's Environmental Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| |
Collapse
|
13
|
Petrovska J, Loos E, Coynel D, Egli T, Papassotiropoulos A, de Quervain DJF, Milnik A. Recognition memory performance can be estimated based on brain activation networks. Behav Brain Res 2021; 408:113285. [PMID: 33819531 DOI: 10.1016/j.bbr.2021.113285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 03/11/2021] [Accepted: 03/30/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Recognition memory is an essential ability for functioning in everyday life. Establishing robust brain networks linked to recognition memory performance can help to understand the neural basis of recognition memory itself and the interindividual differences in recognition memory performance. METHODS We analysed behavioural and whole-brain fMRI data from 1'410 healthy young adults during the testing phase of a picture-recognition task. Using independent component analysis (ICA), we decomposed the fMRI contrast for previously seen vs. new (old-new) pictures into networks of brain activity. This was done in two independent samples (training sample: N = 645, replication sample: N = 665). Next, we investigated the relationship between the identified brain networks and interindividual differences in recognition memory performance by conducting a prediction analysis. We estimated the prediction accuracy in a third independent sample (test sample: N = 100). RESULTS We identified 12 robust and replicable brain networks using two independent samples. Based on the activity of those networks we could successfully estimate interindividual differences in recognition memory performance with high accuracy in a third independent sample (r = 0.5, p = 1.29 × 10-07). CONCLUSION Given the robustness of the ICA decomposition as well as the high prediction estimate, the identified brain networks may be considered as potential biomarkers of recognition memory performance in healthy young adults and can be further investigated in the context of health and disease.
Collapse
Affiliation(s)
- Jana Petrovska
- Division of Molecular Neuroscience, Department of Psychology, University of Basel, CH-4055 Basel, Switzerland; Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, CH-4055 Basel, Switzerland.
| | - Eva Loos
- Division of Cognitive Neuroscience, Department of Psychology, University of Basel, CH-4055 Basel, Switzerland; Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, CH-4055 Basel, Switzerland
| | - David Coynel
- Division of Cognitive Neuroscience, Department of Psychology, University of Basel, CH-4055 Basel, Switzerland; Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, CH-4055 Basel, Switzerland
| | - Tobias Egli
- Division of Molecular Neuroscience, Department of Psychology, University of Basel, CH-4055 Basel, Switzerland; Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, CH-4055 Basel, Switzerland
| | - Andreas Papassotiropoulos
- Division of Molecular Neuroscience, Department of Psychology, University of Basel, CH-4055 Basel, Switzerland; Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, CH-4055 Basel, Switzerland; Psychiatric University Clinics, University of Basel, CH-4055 Basel, Switzerland; Department Biozentrum, Life Sciences Training Facility, University of Basel, CH-4056 Basel, Switzerland
| | - Dominique J-F de Quervain
- Division of Cognitive Neuroscience, Department of Psychology, University of Basel, CH-4055 Basel, Switzerland; Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, CH-4055 Basel, Switzerland; Psychiatric University Clinics, University of Basel, CH-4055 Basel, Switzerland
| | - Annette Milnik
- Division of Molecular Neuroscience, Department of Psychology, University of Basel, CH-4055 Basel, Switzerland; Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, CH-4055 Basel, Switzerland; Psychiatric University Clinics, University of Basel, CH-4055 Basel, Switzerland.
| |
Collapse
|
14
|
Sweeney-Reed CM, Buentjen L, Voges J, Schmitt FC, Zaehle T, Kam JWY, Kaufmann J, Heinze HJ, Hinrichs H, Knight RT, Rugg MD. The role of the anterior nuclei of the thalamus in human memory processing. Neurosci Biobehav Rev 2021; 126:146-158. [PMID: 33737103 DOI: 10.1016/j.neubiorev.2021.02.046] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 02/19/2021] [Accepted: 02/24/2021] [Indexed: 12/13/2022]
Abstract
Extensive neuroanatomical connectivity between the anterior thalamic nuclei (ATN) and hippocampus and neocortex renders them well-placed for a role in memory processing, and animal, lesion, and neuroimaging studies support such a notion. The deep location and small size of the ATN have precluded their real-time electrophysiological investigation during human memory processing. However, ATN electrophysiological recordings from patients receiving electrodes implanted for deep brain stimulation for pharmacoresistant focal epilepsy have enabled high temporal resolution study of ATN activity. Theta frequency synchronization of ATN and neocortical oscillations during successful memory encoding, enhanced phase alignment, and coupling between ATN local gamma frequency activity and frontal neocortical and ATN theta oscillations provide evidence of an active role for the ATN in memory encoding, potentially integrating information from widespread neocortical sources. Greater coupling of a broader gamma frequency range with theta oscillations at rest than during memory encoding provides additional support for the hypothesis that the ATN play a role in selecting local, task-relevant high frequency activity associated with particular features of a memory trace.
Collapse
Affiliation(s)
- Catherine M Sweeney-Reed
- Neurocybernetics and Rehabilitation, Dept. of Neurology, Otto-von-Guericke University Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany; Center for Behavioral Brain Sciences, Otto-von-Guericke University, Magdeburg, Germany.
| | - Lars Buentjen
- Dept. of Stereotactic Neurosurgery, Otto-von-Guericke University, Magdeburg, Germany
| | - Jürgen Voges
- Center for Behavioral Brain Sciences, Otto-von-Guericke University, Magdeburg, Germany; Dept. of Stereotactic Neurosurgery, Otto-von-Guericke University, Magdeburg, Germany
| | | | - Tino Zaehle
- Center for Behavioral Brain Sciences, Otto-von-Guericke University, Magdeburg, Germany; Dept. of Neurology, Otto-von-Guericke University, Magdeburg, Germany
| | - Julia W Y Kam
- Department of Psychology, University of Calgary, Calgary, Canada; Hotchkiss Brain Institute, University of Calgary, Calgary, Canada; Helen Wills Neuroscience Institute, University of California - Berkeley, Berkeley, CA, USA
| | - Jörn Kaufmann
- Dept. of Neurology, Otto-von-Guericke University, Magdeburg, Germany
| | - Hans-Jochen Heinze
- Center for Behavioral Brain Sciences, Otto-von-Guericke University, Magdeburg, Germany; Dept. of Neurology, Otto-von-Guericke University, Magdeburg, Germany; Dept. of Behavioral Neurology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Hermann Hinrichs
- Center for Behavioral Brain Sciences, Otto-von-Guericke University, Magdeburg, Germany; Dept. of Neurology, Otto-von-Guericke University, Magdeburg, Germany; Dept. of Behavioral Neurology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Robert T Knight
- Helen Wills Neuroscience Institute, University of California - Berkeley, Berkeley, CA, USA; Department of Psychology, University of California, Berkeley, Berkeley, CA, USA
| | - Michael D Rugg
- Center for Vital Longevity and School of Behavioral and Brain Sciences, University of Texas, Dallas, TX, USA
| |
Collapse
|
15
|
Thalamic Functional Connectivity during Spatial Long-Term Memory and the Role of Sex. Brain Sci 2020; 10:brainsci10120898. [PMID: 33255156 PMCID: PMC7761215 DOI: 10.3390/brainsci10120898] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/15/2020] [Accepted: 11/19/2020] [Indexed: 12/03/2022] Open
Abstract
The thalamus has been implicated in many cognitive processes, including long-term memory. More specifically, the anterior (AT) and mediodorsal (MD) thalamic nuclei have been associated with long-term memory. Despite extensive mapping of the anatomical connections between these nuclei and other brain regions, little is known regarding their functional connectivity during long-term memory. The current study sought to determine which brain regions are functionally connected to AT and MD during spatial long-term memory and whether sex differences exist in the patterns of connectivity. During encoding, abstract shapes were presented to the left and right of fixation. During retrieval, shapes were presented at fixation, and participants made an “old-left” or “old-right” judgment. Activations functionally connected to AT and MD existed in regions with known anatomical connections to each nucleus as well as in a broader network of long-term memory regions. Sex differences were identified in a subset of these regions. A targeted region-of-interest analysis identified anti-correlated activity between MD and the hippocampus that was specific to females, which is consistent with findings in rodents. The current results suggest that AT and MD play key roles during spatial long-term memory and suggest that these functions may be sex specific.
Collapse
|
16
|
Abhishek P, Nizamie SH, Jahan M, Kumar D, Goyal N, Pachori H, Katshu MZUH. Impaired recollection-based episodic memory as a cognitive endophenotype in schizophrenia. J Clin Exp Neuropsychol 2020; 42:759-770. [PMID: 32907466 DOI: 10.1080/13803395.2020.1801598] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Patients with schizophrenia show impaired recollection but largely preserved familiarity-based episodic memory. This study was done to clarify the endophenotypic nature of recollection and familiarity-based episodic memory in schizophrenia and the role of emotional valence of memoranda and degree of recall confidence in it. METHOD Twenty-five patients with schizophrenia, one unaffected sibling of each patient, and twenty-three healthy controls completed two tasks assessing recollection and familiarity-based processes in episodic memory. In the first task, participants were asked to remember positive, negative, and neutral emotional valence words in a remember-know paradigm. In the second task, in addition to recollection and familiarity-based responses, participants were asked to make confidence judgments about their responses. RESULTS Patients with schizophrenia and their first-degree relatives (FDRs) performed poorly on recollection but not familiarity-based responses, compared to healthy controls; performance of first-degree relatives was in between and significantly different from that of both patients and controls. The differences in recollection and familiarity-based responses across the three groups were not moderated by recall confidence judgments or emotional valence of memoranda. Furthermore, there was no correlation between recollection-based memory impairments and duration or severity of illness or current medication exposure. CONCLUSIONS Impaired recollection-based memory constitutes a potential cognitive endophenotype in schizophrenia. Furthermore, selective impairment of recollection-based, but sparing of familiarity-based, memory in patients and their FDRs supports the distinct nature of recollection and familiarity-based episodic memories.
Collapse
Affiliation(s)
| | - S Haque Nizamie
- K. S. Mani Centre for Cognitive Neurosciences, Central Institute of Psychiatry , Ranchi, India
| | - Masroor Jahan
- Department of Clinical Psychology, Ranchi Institute of Neuro-Psychiatry & Allied Sciences , Ranchi, India
| | - Devvarta Kumar
- Department of Clinical Psychology, National Institute of Mental Health and Neurosciences , Bangalore, India
| | - Nishant Goyal
- K. S. Mani Centre for Cognitive Neurosciences, Central Institute of Psychiatry , Ranchi, India
| | - Hariom Pachori
- Computer Department-Statistical Section, Central Institute of Psychiatry , Ranchi, India
| | - Mohammad Zia Ul Haq Katshu
- Institute of Mental Health, University of Nottingham , Nottingham, UK.,Nottinghamshire Healthcare NHS Foundation Trust , Nottingham, UK
| |
Collapse
|
17
|
Segobin S, Laniepce A, Ritz L, Lannuzel C, Boudehent C, Cabé N, Urso L, Vabret F, Eustache F, Beaunieux H, Pitel AL. Dissociating thalamic alterations in alcohol use disorder defines specificity of Korsakoff's syndrome. Brain 2020; 142:1458-1470. [PMID: 30879030 DOI: 10.1093/brain/awz056] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/23/2018] [Accepted: 01/20/2019] [Indexed: 12/25/2022] Open
Abstract
The thalamus, a relay organ consisting of several nuclei, is shared between the frontocerebellar circuit and the Papez circuit, both particularly affected in alcohol use disorder. Shrinkage of the thalamus is known to be more severe in alcoholics with Korsakoff's syndrome than in those without neurological complications (uncomplicated alcoholics). While thalamic atrophy could thus be a key factor explaining amnesia in Korsakoff's syndrome, the loci and nature of alterations within the thalamic nuclei in uncomplicated alcoholics and alcoholics with Korsakoff's syndrome remains unclear. Indeed, the literature from animal and human models is disparate regarding whether the anterior thalamic nuclei, or the mediodorsal nuclei are particularly affected and would be responsible for amnesia. Sixty-two participants (20 healthy controls, 26 uncomplicated alcoholics and 16 patients with Korsakoff's syndrome) underwent a diffusion tensor imaging sequence and T1-weighted MRI. State-of-the-art probabilistic tractography was used to segment the thalamus according to its connections to the prefrontal cortex and cerebellar Cruses I and II for the frontocerebellar circuit's executive loop, the precentral gyrus and cerebellar lobes IV-VI for the frontocerebellar circuit's motor loop, and hippocampus for the Papez circuit. The connectivity and volumes of these parcellations were calculated. Tractography showed that the hippocampus was principally connected to the anterior thalamic nuclei while the prefrontal cortex was principally connected to the mediodorsal nuclei. The fibre pathways connecting these brain regions and their respective thalamic nuclei have also been validated. ANCOVA, with age and gender as covariates, on connectivity measures showed abnormalities in both patient groups for thalamic parcellations connected to the hippocampus only [F(2,57) = 12.1; P < 0.0001; η2 = 0.2964; with graded effects of the number of connections from controls to uncomplicated alcoholics to Korsakoff's syndrome]. Atrophy, on the other hand, was observed for the prefrontal parcellation in both patient groups and to the same extent compared to controls [F(2,56) = 18.7; P < 0.0001; η2 = 0.40]. For the hippocampus parcellation, atrophy was found in the Korsakoff's syndrome group only [F(2,56) = 5.5; P = 0.006; η2 = 0.170, corrected for multiple comparisons using Bonferroni, P < 0.01]. Post hoc Tukey's test for unequal sample sizes, healthy controls > patients with Korsakoff's syndrome (P = 0.0036). Two different mechanisms seem to affect the thalamus. In the frontocerebellar circuit, atrophy of the mediodorsal nuclei may lead to the alterations, whereas in the Papez circuit, disconnection between the anterior nuclei and hippocampus may be the leading factor. Shrinkage of the anterior nuclei could be specific to patients with Korsakoff's syndrome, hence a potential neuroimaging marker of its pathophysiology, or more generally of thalamic amnesia for which Korsakoff's syndrome has historically been used as a model.
Collapse
Affiliation(s)
- Shailendra Segobin
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France
| | - Alice Laniepce
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France
| | - Ludivine Ritz
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France
| | - Coralie Lannuzel
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France
| | - Céline Boudehent
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France.,Service d'Addictologie, Centre Hospitalier Universitaire de Caen, Caen, France
| | - Nicolas Cabé
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France.,Service d'Addictologie, Centre Hospitalier Universitaire de Caen, Caen, France
| | - Laurent Urso
- Service d'Addictologie, Centre Hospitalier Roubaix, Roubaix, France
| | - François Vabret
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France.,Service d'Addictologie, Centre Hospitalier Universitaire de Caen, Caen, France
| | - Francis Eustache
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France
| | - Hélène Beaunieux
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France
| | - Anne-Lise Pitel
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France
| |
Collapse
|
18
|
Kafkas A, Mayes AR, Montaldi D. Thalamic-Medial Temporal Lobe Connectivity Underpins Familiarity Memory. Cereb Cortex 2020; 30:3827-3837. [PMID: 31989161 PMCID: PMC7232995 DOI: 10.1093/cercor/bhz345] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 12/23/2019] [Accepted: 12/24/2019] [Indexed: 11/12/2022] Open
Abstract
The neural basis of memory is highly distributed, but the thalamus is known to play a particularly critical role. However, exactly how the different thalamic nuclei contribute to different kinds of memory is unclear. Moreover, whether thalamic connectivity with the medial temporal lobe (MTL), arguably the most fundamental memory structure, is critical for memory remains unknown. We explore these questions using an fMRI recognition memory paradigm that taps familiarity and recollection (i.e., the two types of memory that support recognition) for objects, faces, and scenes. We show that the mediodorsal thalamus (MDt) plays a material-general role in familiarity, while the anterior thalamus plays a material-general role in recollection. Material-specific regions were found for scene familiarity (ventral posteromedial and pulvinar thalamic nuclei) and face familiarity (left ventrolateral thalamus). Critically, increased functional connectivity between the MDt and the parahippocampal (PHC) and perirhinal cortices (PRC) of the MTL underpinned increases in reported familiarity confidence. These findings suggest that familiarity signals are generated through the dynamic interaction of functionally connected MTL-thalamic structures.
Collapse
Affiliation(s)
- Alex Kafkas
- School of Biological Sciences, Division of Neuroscience & Experimental Psychology, University of Manchester, UK
| | - Andrew R Mayes
- School of Biological Sciences, Division of Neuroscience & Experimental Psychology, University of Manchester, UK
| | - Daniela Montaldi
- School of Biological Sciences, Division of Neuroscience & Experimental Psychology, University of Manchester, UK
| |
Collapse
|
19
|
Abstract
Historically, the fields of operant selection and recognition memory have not interacted substantially with one another. However, both deal with how behavioral repertoires change over time as a function of environmental stimulation. In this article, we propose neuro-operant interpretations of behavioral phenomena occurring in recognition memory procedures based on (a) the ability to discriminate changes in the strength of responses caused by environmental stimulation and (b) the occasioning of supplementary responses by current stimulation. A neuro-operant interpretation of mnemonic behavior may further the understanding of the phenomena in place and simplify the current taxonomy of learning and memory.
Collapse
Affiliation(s)
- Daniele Ortu
- Neurobehavioral Laboratory, Department of Behavior Analysis, University of North Texas, 1155 Union Circle, Box 310919, Denton, TX 76203 USA
| | - Traci M. Cihon
- Neurobehavioral Laboratory, Department of Behavior Analysis, University of North Texas, 1155 Union Circle, Box 310919, Denton, TX 76203 USA
| |
Collapse
|
20
|
Godfrey M, Gillis MM, Khurana D, Poletto E, Tarazi RA. Neuropsychological outcome following thalamic stroke in adolescence: an identical twin comparison. Clin Neuropsychol 2018; 33:905-927. [DOI: 10.1080/13854046.2018.1533997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mary Godfrey
- Department of Psychology, Drexel University, Philadelphia, PA, USA
| | | | - Divya Khurana
- St. Christopher’s Hospital for Children, Philadelphia, PA, USA
- Department of Pediatrics, Drexel University, Philadelphia, PA, USA
| | - Erica Poletto
- St. Christopher’s Hospital for Children, Philadelphia, PA, USA
- Department of Pediatrics, Drexel University, Philadelphia, PA, USA
- Department of Radiologic Sciences, Drexel University, Philadelphia, PA, USA
| | - Reem A. Tarazi
- St. Christopher’s Hospital for Children, Philadelphia, PA, USA
- Department of Psychiatry, Drexel University, Philadelphia, PA, USA
| |
Collapse
|
21
|
Abstract
Taste research in rodents supports the relevance of memory in order to determine the content of consciousness by modifying both taste perception and later action. Associated with this issue is the fact that taste and visual modalities share anatomical circuits traditionally related to conscious memory. This challenges the view of taste memory as a type of non-declarative unconscious memory.
Collapse
|
22
|
Ernst A, Delrue G, Willems S. Overcoming familiarity illusions in a single case with persistent déjà vu. Memory 2018; 29:869-883. [PMID: 30136891 DOI: 10.1080/09658211.2018.1510965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
While occasional déjà vu is benign in the general population, rare neuropsychological cases with persistent déjà vu have been described in the literature. We report the case of MN, a 25-year-old woman, who suffered a cerebral haemorrhage in the right thalamo-callosal region and experienced recurrent déjà vu episodes. Through clinical interviews and memory tasks related to déjà vu, we assumed that source memory errors and an inappropriate feeling of familiarity (measured by the number of false recognitions) were critically involved in MN's déjà vu. Based on this, we developed the first neuropsychological intervention dedicated to déjà vu. The rationale was to train MN to detect elements that could produce an inappropriate feeling of familiarity and to promote metacognitive awareness about déjà vu. This intervention was effective at reducing the frequency of déjà vu episodes in MN's daily life, as well as the number of false recognitions in memory tasks. In addition to its clinical contribution, this single-case study contributes to the limited literature on patients whose déjà vu is not related to epileptic abnormalities and medial temporal brain damage, and provide supportive evidence of the role of an erroneous feeling of familiarity and of metacognitive processes in déjà vu.
Collapse
Affiliation(s)
- Alexandra Ernst
- Department of Psychology, Psychology and Neuroscience of Cognition Research Unit, University of Liège, Liege, Belgium
| | - Gaël Delrue
- Unité de revalidation neuropsychologique de l'Adulte - CHU de Liège, Liege, Belgium
| | - Sylvie Willems
- Psychological and Speech Therapy Consultation Centre (CPLU), University of Liège, Liege, Belgium
| |
Collapse
|
23
|
Barnett SC, Perry BAL, Dalrymple-Alford JC, Parr-Brownlie LC. Optogenetic stimulation: Understanding memory and treating deficits. Hippocampus 2018; 28:457-470. [DOI: 10.1002/hipo.22960] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/24/2018] [Accepted: 05/02/2018] [Indexed: 01/01/2023]
Affiliation(s)
- S. C. Barnett
- Department of Psychology; University of Canterbury; Christchurch 8041 New Zealand
- Brain Research New Zealand; New Zealand
| | - B. A. L. Perry
- Department of Psychology; University of Canterbury; Christchurch 8041 New Zealand
- Brain Research New Zealand; New Zealand
| | - J. C. Dalrymple-Alford
- Department of Psychology; University of Canterbury; Christchurch 8041 New Zealand
- Brain Research New Zealand; New Zealand
- New Zealand Brain Research Institute; Christchurch New Zealand
| | - L. C. Parr-Brownlie
- Brain Research New Zealand; New Zealand
- Department of Anatomy, School of Biomedical Science; Brain Health Research Centre, University of Otago; Dunedin New Zealand
| |
Collapse
|
24
|
Cona G, Laera G, Edelstyn N, Bisiacchi PS. Deficits in prospective memory following damage to the medial subdivision of the mediodorsal thalamic nucleus. J Neuropsychol 2018; 13:398-416. [PMID: 29604176 DOI: 10.1111/jnp.12154] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 02/20/2018] [Indexed: 11/27/2022]
Abstract
Identifying the neurocognitive mechanisms that lead individuals remembering to execute an intention at the right moment (prospective memory, PM) and how such mechanisms are influenced by the features of that intention is a fundamental theoretical challenge. In particular, the functional contribution of subcortical regions to PM is still unknown. This study was aimed at investigating the role of the medial subdivision of the mediodorsal thalamic nucleus (mMDT) in PM, with particular focus on the processes that are mediated by the projections from/to this structure. We analysed the performance of a patient (OG) with a right-sided lesion involving the mMDT in a series of PM tasks that varied for focality (i.e., overlapping of processes for the PM and ongoing tasks) and emotional valence of the stimuli, comparing the patient's performance with that of a control group. We found that the mMDT damage led to deficits in PM that were modulated by focality and emotional valence. OG indeed showed: a greater cost in the ongoing performance when a non-focal PM task was added; a slowing down in retrieving the intentions, in particular when these were associated with focal PM cues; an abnormal performance in the task with positive PM cues. Our findings provide evidence of a contribution of mMDT to PM and suggest a modulation of prefrontal-dependent strategic monitoring and a possible interaction with the limbic structures in the integration of emotion and PM processes. They also give support to the still controversial idea that connections with the perirhinal cortex mediate familiarity-based recognition.
Collapse
Affiliation(s)
- Giorgia Cona
- Department of General Psychology, University of Padova, Italy.,Padua Neuroscience Center, Padova, Italy
| | - Gianvito Laera
- School of Psychology, Keele University, Staffordshire, UK
| | | | - Patrizia S Bisiacchi
- Department of General Psychology, University of Padova, Italy.,Padua Neuroscience Center, Padova, Italy
| |
Collapse
|
25
|
Kafkas A, Montaldi D. How do memory systems detect and respond to novelty? Neurosci Lett 2018; 680:60-68. [PMID: 29408218 PMCID: PMC6565889 DOI: 10.1016/j.neulet.2018.01.053] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 01/25/2018] [Accepted: 01/27/2018] [Indexed: 12/22/2022]
Abstract
The efficiency of the memory system lies not only in its readiness to detect and retrieve old stimuli but also in its ability to detect and integrate novel information. In this review, we discuss recent evidence suggesting that the neural substrates sensitive to detecting familiarity and novelty are not entirely overlapping. Instead, these partially distinct familiarity and novelty signals are integrated to support recognition memory decisions. We propose here that the mediodorsal thalamus is critical for familiarity detection, and for combining novelty signals from the medial temporal lobe cortex with the relative familiarity outputs of computations performed in other cortical structures, especially the prefrontal cortex. Importantly, we argue that the anterior hippocampus has a prominent role in detecting novelty and in communicating this with midbrain and striatal structures. We argue that different types of novelty (absolute or contextual) engage different neurotransmitter systems that converge in the hippocampus. We suggest that contextual or unexpected novelty triggers dopaminergic hippocampal-midbrain coupling and noradrenergic-mediated pupil dilation. In contrast, absolute novelty triggers cholinergic-mediated hippocampal encoding accompanied by diminished pupil dilation. These two, distinct hippocampal encoding mechanisms both lead to later recollection but are sensitive to different types of novelty. We conclude that this neurotransmitter-mediated hippocampal encoding establishes the hippocampus in an encoding mode that briefly prevents the engagement of retrieval.
Collapse
Affiliation(s)
- Alex Kafkas
- Memory Research Unit, School of Biological Sciences, Division of Neuroscience & Experimental Psychology, University of Manchester, UK.
| | - Daniela Montaldi
- Memory Research Unit, School of Biological Sciences, Division of Neuroscience & Experimental Psychology, University of Manchester, UK
| |
Collapse
|
26
|
The contribution of different prefrontal cortex regions to recollection and familiarity: a review of fMRI data. Neurosci Biobehav Rev 2017; 83:240-251. [DOI: 10.1016/j.neubiorev.2017.10.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 09/08/2017] [Accepted: 10/18/2017] [Indexed: 11/23/2022]
|
27
|
Perry BAL, Mercer SA, Barnett SC, Lee J, Dalrymple-Alford JC. Anterior thalamic nuclei lesions have a greater impact than mammillothalamic tract lesions on the extended hippocampal system. Hippocampus 2017; 28:121-135. [DOI: 10.1002/hipo.22815] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 11/10/2017] [Accepted: 11/15/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Brook A. L. Perry
- Department of Psychology; University of Canterbury; Christchurch New Zealand
- Brain Research New Zealand, co-hosted by Auckland and Otago Universities; Auckland New Zealand
| | - Stephanie A. Mercer
- Department of Biochemistry; University of Otago; Dunedin
- Brain Research New Zealand, co-hosted by Auckland and Otago Universities; Auckland New Zealand
| | - Sophie C. Barnett
- Department of Psychology; University of Canterbury; Christchurch New Zealand
- Brain Research New Zealand, co-hosted by Auckland and Otago Universities; Auckland New Zealand
| | - Jungah Lee
- Department of Psychology; University of Canterbury; Christchurch New Zealand
| | - John C. Dalrymple-Alford
- Department of Psychology; University of Canterbury; Christchurch New Zealand
- Brain Research New Zealand, co-hosted by Auckland and Otago Universities; Auckland New Zealand
- New Zealand Brain Research Institute; Christchurch New Zealand
| |
Collapse
|
28
|
Danet L, Pariente J, Eustache P, Raposo N, Sibon I, Albucher JF, Bonneville F, Péran P, Barbeau EJ. Medial thalamic stroke and its impact on familiarity and recollection. eLife 2017; 6:28141. [PMID: 28837019 PMCID: PMC5595429 DOI: 10.7554/elife.28141] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 08/21/2017] [Indexed: 11/13/2022] Open
Abstract
Models of recognition memory have postulated that the mammillo-thalamic tract (MTT)/anterior thalamic nucleus (AN) complex would be critical for recollection while the Mediodorsal nucleus (MD) of the thalamus would support familiarity and indirectly also be involved in recollection (Aggleton et al., 2011). 12 patients with left thalamic stroke underwent a neuropsychological assessment, three verbal recognition memory tasks assessing familiarity and recollection each using different procedures and a high-resolution structural MRI. Patients showed poor recollection on all three tasks. In contrast, familiarity was spared in each task. No patient had significant AN lesions. Critically, a subset of 5 patients had lesions of the MD without lesions of the MTT. They also showed impaired recollection but preserved familiarity. Recollection is therefore impaired following MD damage, but familiarity is not. This suggests that models of familiarity, which assign a critical role to the MD, should be reappraised.
Collapse
Affiliation(s)
- Lola Danet
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Toulouse, France.,Brain and Cognition Research Centre, CNRS, University of Toulouse Paul Sabatier, Toulouse, France.,Neurology Department, CHU Toulouse Purpan, Toulouse, France
| | - Jérémie Pariente
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Toulouse, France.,Neurology Department, CHU Toulouse Purpan, Toulouse, France
| | - Pierre Eustache
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Toulouse, France
| | - Nicolas Raposo
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Toulouse, France.,Neurology Department, CHU Toulouse Purpan, Toulouse, France
| | - Igor Sibon
- Department of Diagnostic and Therapeutic Neuroimaging, University of Bordeaux, Bordeaux University Hospital, Bordeaux, France
| | - Jean-François Albucher
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Toulouse, France.,Neurology Department, CHU Toulouse Purpan, Toulouse, France
| | - Fabrice Bonneville
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Toulouse, France.,Neurology Department, CHU Toulouse Purpan, Toulouse, France
| | - Patrice Péran
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Toulouse, France
| | - Emmanuel J Barbeau
- Brain and Cognition Research Centre, CNRS, University of Toulouse Paul Sabatier, Toulouse, France
| |
Collapse
|
29
|
Barban F, Mancini M, Cercignani M, Adriano F, Perri R, Annicchiarico R, Carlesimo GA, Ricci C, Lombardi MG, Teodonno V, Serra L, Giulietti G, Fadda L, Federici A, Caltagirone C, Bozzali M. A Pilot Study on Brain Plasticity of Functional Connectivity Modulated by Cognitive Training in Mild Alzheimer's Disease and Mild Cognitive Impairment. Brain Sci 2017; 7:brainsci7050050. [PMID: 28468232 PMCID: PMC5447932 DOI: 10.3390/brainsci7050050] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/08/2017] [Accepted: 04/26/2017] [Indexed: 11/16/2022] Open
Abstract
Alzheimer's disease (AD) alters the functional connectivity of the default mode network (DMN) but also the topological properties of the functional connectome. Cognitive training (CT) is a tool to slow down AD progression and is likely to impact on functional connectivity. In this pilot study, we aimed at investigating brain functional changes after a period of CT and active control (AC) in a group of 26 subjects with mild AD (mAD), 26 with amnestic mild cognitive impairment (aMCI), and a control group of 29 healthy elderly (HE) people. They all underwent a CT and AC in a counterbalanced order following a crossover design. Resting-state functional MRI and neuropsychological testing were acquired before and after each period. We tested post-CT and post-AC changes of cognitive abilities, of the functional connectivity of the DMN, and of topological network properties derived from graph theory and network-based statistics. Only CT produced functional changes, increasing the functional connectivity of the posterior DMN in all three groups. mAD also showed functional changes in the medial temporal lobe and topological changes in the anterior cingulum, whereas aMCI showed more widespread topological changes involving the frontal lobes, the cerebellum and the thalamus. Our results suggest specific functional connectivity changes after CT for aMCI and mAD.
Collapse
Affiliation(s)
- Francesco Barban
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
- Neuroimaging Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
- Humboldt-Universität zu Berlin, Berlin School of Mind and Brain, Berlin 10117, Germany.
| | - Matteo Mancini
- Department of Engineering, University of Rome "Roma Tre", Rome 00146, Italy.
| | - Mara Cercignani
- Clinical Imaging Sciences Centre, Brighton and Sussex and Medical School, Brighton BN1 9RR, UK.
| | - Fulvia Adriano
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
- Neuroimaging Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
| | - Roberta Perri
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
| | - Roberta Annicchiarico
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
| | - Giovanni Augusto Carlesimo
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
- Department of Systemic Medicine, University of Tor Vergata, Rome 00173, Italy.
| | - Claudia Ricci
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
| | - Maria Giovanna Lombardi
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
| | - Valeria Teodonno
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
| | - Laura Serra
- Neuroimaging Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
| | - Giovanni Giulietti
- Neuroimaging Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
| | - Lucia Fadda
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
- Department of Systemic Medicine, University of Tor Vergata, Rome 00173, Italy.
| | - Alessia Federici
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
| | - Carlo Caltagirone
- Clinical and Behavioral Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
- Department of Systemic Medicine, University of Tor Vergata, Rome 00173, Italy.
| | - Marco Bozzali
- Neuroimaging Laboratory, IRCCS Santa Lucia Foundation, Rome 00179, Italy.
| |
Collapse
|
30
|
Left Dorsomedial Thalamic Damage Impairs Verbal Recall More Than Recognition: A Case Report. Cogn Behav Neurol 2016; 29:158-65. [PMID: 27662454 DOI: 10.1097/wnn.0000000000000103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Damage to the dorsomedial thalamus usually leads to impaired episodic memory, attention, and executive function, but the role of the dorsomedial thalamus in memory processing is still not fully understood. Clinical evidence is inconclusive about whether dorsomedial thalamic damage impairs recall or whether it impairs recognition. I report a unique patient who suffered a cardioembolic stroke in the paramedian artery territory, caused by a patent foramen ovale. He was left with a chronic ischemic lesion centered in the parvocellular and, to a lesser extent, the magnocellular portions of the left dorsomedial thalamic nucleus, and marginally involving the midline and intralaminar nuclei. A year after the stroke, the patient's neuropsychological assessment showed a selective verbal memory deficit with greater loss of recall than recognition. His memory was normal when he was given semantically encoded material. His test results showed that damage to the left dorsomedial thalamic nucleus might affect both his recall and recognition because of the involvement of the parvocellular and magnocellular portions, respectively. The results also suggest that the left dorsomedial thalamus is involved in the encoding of verbal material. This case report highlights the role that the left dorsomedial thalamus plays in processing memory specific to verbal material. The findings point to the differential contribution of the dorsomedial parvocellular nucleus to recall, and support the theory that prefrontal strategic memory is enabled by adequate encoding of information through thalamocortical connectivity with the dorsolateral prefrontal cortex.
Collapse
|
31
|
Christiansen K, Dillingham CM, Wright NF, Saunders RC, Vann SD, Aggleton JP. Complementary subicular pathways to the anterior thalamic nuclei and mammillary bodies in the rat and macaque monkey brain. Eur J Neurosci 2016; 43:1044-61. [PMID: 26855336 PMCID: PMC4855639 DOI: 10.1111/ejn.13208] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 01/22/2016] [Accepted: 02/04/2016] [Indexed: 02/01/2023]
Abstract
The origins of the hippocampal (subicular) projections to the anterior thalamic nuclei and mammillary bodies were compared in rats and macaque monkeys using retrograde tracers. These projections form core components of the Papez circuit, which is vital for normal memory. The study revealed a complex pattern of subicular efferents, consistent with the presence of different, parallel information streams, whose segregation appears more marked in the rat brain. In both species, the cells projecting to the mammillary bodies and anterior thalamic nuclei showed laminar separation but also differed along other hippocampal axes. In the rat, these diencephalic inputs showed complementary topographies in the proximal–distal (columnar) plane, consistent with differential involvement in object‐based (proximal subiculum) and context‐based (distal subiculum) information. The medial mammillary inputs, which arose along the anterior–posterior extent of the rat subiculum, favoured the central subiculum (septal hippocampus) and the more proximal subiculum (temporal hippocampus). In contrast, anterior thalamic inputs were largely confined to the dorsal (i.e. septal and intermediate) subiculum, where projections to the anteromedial nucleus favoured the proximal subiculum while those to the anteroventral nucleus predominantly arose in the distal subiculum. In the macaque, the corresponding diencephalic inputs were again distinguished by anterior–posterior topographies, as subicular inputs to the medial mammillary bodies predominantly arose from the posterior hippocampus while subicular inputs to the anteromedial thalamic nucleus predominantly arose from the anterior hippocampus. Unlike the rat, there was no clear evidence of proximal–distal separation as all of these medial diencephalic projections preferentially arose from the more distal subiculum.
Collapse
Affiliation(s)
- Kat Christiansen
- School of Psychology, Cardiff University, Tower Building 70, Park Place, Cardiff, CF10 3AT, UK
| | | | - Nicholas F Wright
- School of Psychology, Cardiff University, Tower Building 70, Park Place, Cardiff, CF10 3AT, UK
| | - Richard C Saunders
- Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD, USA
| | - Seralynne D Vann
- School of Psychology, Cardiff University, Tower Building 70, Park Place, Cardiff, CF10 3AT, UK
| | - John P Aggleton
- School of Psychology, Cardiff University, Tower Building 70, Park Place, Cardiff, CF10 3AT, UK
| |
Collapse
|
32
|
Christiansen K, Aggleton JP, Parker GD, O'Sullivan MJ, Vann SD, Metzler-Baddeley C. The status of the precommissural and postcommissural fornix in normal ageing and mild cognitive impairment: An MRI tractography study. Neuroimage 2016; 130:35-47. [PMID: 26778129 PMCID: PMC4819721 DOI: 10.1016/j.neuroimage.2015.12.055] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 12/04/2015] [Accepted: 12/31/2015] [Indexed: 02/05/2023] Open
Abstract
The fornix connects the hippocampal formation with structures beyond the temporal lobe. Previous tractography studies have typically reconstructed the fornix as one unified bundle. However, the fornix contains two rostral divisions: the precommissural fornix and the postcommissural fornix. Each division has distinct anatomical connections and, hence, potentially distinct functions. Diffusion weighted MRI and spherical deconvolution based tractography were employed to reconstruct these separate fornix divisions and to examine their microstructural properties in both healthy ageing and Mild Cognitive Impairment (MCI). Reliable reconstructions of precommissural and postcommissural fibres were achieved in both groups, with their fibres retaining largely separate locations within the anterior body of the fornix. Ageing and MCI had comparable effects on the two segments. Ageing was associated with changes in mean, axial and radial diffusivity but not with alterations of fibre population-specific diffusion properties, estimated with the hindrance modulated orientational anisotropy (HMOA). Individual HMOA variation in postcommissural, but not precommissural, fibres correlated positively (and unrelated to age) with visual recall performance. This provides novel evidence for a role of postcommissural fibres, which connect structures of the extended hippocampal network, in episodic memory function. Separating the fornix into its two principal divisions brings new opportunities for distinguishing different hippocampal networks. Fornix has two rostral divisions with distinct anatomical connections New tractography protocol for separating precommissural and postcommissural fornix Positive correlation between postcommissural HMOA and episodic memory Age-related increases in diffusivity but not in HMOA of fornix Mild Cognitive Impairment affects microstructure in both divisions
Collapse
Affiliation(s)
- Kat Christiansen
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Tower Building, 70, Park Place, Cardiff CF10 3AT, UK
| | - John P Aggleton
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Tower Building, 70, Park Place, Cardiff CF10 3AT, UK
| | - Greg D Parker
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Tower Building, 70, Park Place, Cardiff CF10 3AT, UK
| | - Michael J O'Sullivan
- Department of Basic and Clinical Neurosciences, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | - Seralynne D Vann
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Tower Building, 70, Park Place, Cardiff CF10 3AT, UK
| | - Claudia Metzler-Baddeley
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Tower Building, 70, Park Place, Cardiff CF10 3AT, UK.
| |
Collapse
|