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Carmona I, Rodriguez-Rodriguez J, Alvarez D, Noguera C. Inhibition and working memory capacity modulate the mental space-time association. Psychon Bull Rev 2024:10.3758/s13423-024-02497-1. [PMID: 38639835 DOI: 10.3758/s13423-024-02497-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2024] [Indexed: 04/20/2024]
Abstract
This research aimed to investigate whether the mental space-time association of temporal concepts could be modulated by the availability of cognitive resources (in terms of working memory and inhibitory control capacities) and to explore whether access to this association could be an automatic process. To achieve this, two experiments were carried out. In Experiment 1, participants had to classify words with future and past meanings. The working memory load (high vs. low) was manipulated and the participants were grouped into quartiles according to their visuospatial working memory capacity (WMC). Temporal concepts were displayed subliminally (immediate masking) and supraliminally (delayed masking). The ANOVA showed a performance pattern consistent with the left-past right-future conceptual scheme, regardless of both the type of masking and the working memory load, except in high WMC participants, in which, interestingly, the space-time association effect was absent. In Experiment 2, participants were asked to respond to the colour of the font of the temporal words, and their attentional control capacity was assessed. The results indicated a timeline effect that was irrespective of the WM load and the type of perceptual processing, but not of the WM capacity or the inhibitory abilities. These findings partially endorse the automatic and implicit access to the mental space-time association and suggest the involvement of the availability of cognitive resources. Individual WMC differences appear to modulate the automatic nature of the effect rather than the processing conditions themselves.
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Affiliation(s)
- Isabel Carmona
- Department of Psychology, Health Research Center, University of Almería, Carretera Sacramento s/n. 04120 La Cañada de San Urbano, Almería, Spain.
| | - Jose Rodriguez-Rodriguez
- Department of Psychology, Health Research Center, University of Almería, Carretera Sacramento s/n. 04120 La Cañada de San Urbano, Almería, Spain
| | - Dolores Alvarez
- Department of Psychology, Health Research Center, University of Almería, Carretera Sacramento s/n. 04120 La Cañada de San Urbano, Almería, Spain
| | - Carmen Noguera
- Department of Psychology, Health Research Center, University of Almería, Carretera Sacramento s/n. 04120 La Cañada de San Urbano, Almería, Spain.
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Verbitsky R, Anderson B, Danckert J, Dukelow S, Striemer CL. Left Cerebellar Lesions may be Associated with an Increase in Spatial Neglect-like Symptoms. CEREBELLUM (LONDON, ENGLAND) 2024; 23:431-443. [PMID: 36995498 DOI: 10.1007/s12311-023-01542-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/07/2023] [Indexed: 03/31/2023]
Abstract
Each cerebellar hemisphere projects to the contralateral cerebral hemisphere. Previous research suggests a lateralization of cognitive functions in the cerebellum that mirrors the cerebral cortex, with attention/visuospatial functions represented in the left cerebellar hemisphere, and language functions in the right cerebellar hemisphere. Although there is good evidence supporting the role of the right cerebellum with language functions, the evidence supporting the notion that attention and visuospatial functions are left lateralized is less clear. Given that spatial neglect is one of the most common disorders arising from right cortical damage, we reasoned that damage to the left cerebellum would result in increased spatial neglect-like symptoms, without necessarily leading to an official diagnosis of spatial neglect. To examine this disconnection hypothesis, we analyzed neglect screening data (line bisection, cancellation, figure copying) from 20 patients with isolated unilateral cerebellar stroke. Results indicated that left cerebellar patients (n = 9) missed significantly more targets on the left side of cancellation tasks compared to a normative sample. No significant effects were observed for right cerebellar patients (n = 11). A lesion overlap analysis indicated that Crus II (78% overlap), and lobules VII and IX (66% overlap) were the regions most commonly damaged in left cerebellar patients. Our results are consistent with the notion that the left cerebellum may be important for attention and visuospatial functions. Given the poor prognosis typically associated with neglect, we suggest that screening for neglect symptoms, and visuospatial deficits more generally, may be important for tailoring rehabilitative efforts to help maximize recovery in cerebellar patients.
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Affiliation(s)
- Ryan Verbitsky
- Department of Psychology, MacEwan University, Edmonton, AB, Canada
| | - Britt Anderson
- Department of Psychology, University of Waterloo, Waterloo, ON, Canada
| | - James Danckert
- Department of Psychology, University of Waterloo, Waterloo, ON, Canada
| | - Sean Dukelow
- Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada
| | - Christopher L Striemer
- Department of Psychology, MacEwan University, Edmonton, AB, Canada.
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada.
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Cantarella G, Vianello G, Vezzadini G, Frassinetti F, Ciaramelli E, Candini M. Time bisection and reproduction: Evidence for a slowdown of the internal clock in right brain damaged patients. Cortex 2023; 167:303-317. [PMID: 37595392 DOI: 10.1016/j.cortex.2023.05.024] [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: 10/06/2022] [Revised: 03/31/2023] [Accepted: 05/24/2023] [Indexed: 08/20/2023]
Abstract
Previous studies show that the right hemisphere is involved in time processing, and that damage to the right hemisphere is associated with a tendency to perceive time intervals as shorter than they are, and to reproduce time intervals as longer than they are. Whether time processing deficits following right hemisphere damage are related and what is their neurocognitive basis is unclear. In this study, right brain damaged (RBD) patients, left brain damaged (LBD) patients, and healthy controls underwent a time bisection task and a time reproduction task involving time intervals varying between each other by milliseconds (short durations) or seconds (long durations). The results show that in the time bisection task RBD patients underestimated time intervals compared to LBD patients and healthy controls, while they reproduced time intervals as longer than they are. Time underestimation and over-reproduction in RBD patients applied to short but not long time intervals, and were correlated. Voxel-based lesion-symptom mapping (VLSM) showed that time underestimation was associated with lesions to a right cortico-subcortical network involving the insula and inferior frontal gyrus. A small portion of this network was also associated with time over-reproduction. Our findings are consistent with a slowdown of an 'internal clock' timing mechanism following right brain damage, which likely underlies both the underestimation and the over-reproduction of time intervals, and their (overlapping) neural bases.
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Affiliation(s)
- Giovanni Cantarella
- Department of Psychology 'Renzo Canestrari', University of Bologna, Bologna, Italy; Center for Studies and Research of Cognitive Neuroscience, University of Bologna, Cesena, Italy
| | - Greta Vianello
- Istituti Clinici Scientifici Maugeri IRCCS, Castel Goffredo, Italy
| | | | - Francesca Frassinetti
- Department of Psychology 'Renzo Canestrari', University of Bologna, Bologna, Italy; Istituti Clinici Scientifici Maugeri IRCCS, Castel Goffredo, Italy
| | - Elisa Ciaramelli
- Department of Psychology 'Renzo Canestrari', University of Bologna, Bologna, Italy; Center for Studies and Research of Cognitive Neuroscience, University of Bologna, Cesena, Italy.
| | - Michela Candini
- Department of Psychology 'Renzo Canestrari', University of Bologna, Bologna, Italy.
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Pacella V, Scandola M, Bà M, Smania N, Beccherle M, Rossato E, Volpe D, Moro V. Temporal judgments of actions following unilateral brain damage. Sci Rep 2022; 12:21668. [PMID: 36522442 PMCID: PMC9755153 DOI: 10.1038/s41598-022-26070-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
Sense of time is a complex construct, and its neural correlates remain to date in most part unknown. To complicate the frame, physical attributes of the stimulus, such as its intensity or movement, influence temporal perception. Although previous studies have shown that time perception can be compromised after a brain lesion, the evidence on the role of the left and right hemispheres are meager. In two experiments, the study explores the ability of temporal estimation of multi-second actions and non-biological movements in 33 patients suffering from unilateral brain lesion. Furthermore, the modulatory role of induced embodiment processes is investigated. The results reveal a joint contribution of the two hemispheres depending not only on different durations but also on the presence of actions. Indeed, the left hemisphere damaged patients find it difficult to estimate 4500 ms or longer durations, while the right hemisphere damaged patients fail in 3000 ms durations. Furthermore, the former fail when a biological action is shown, while the latter fail in non-biological movement. Embodiment processes have a modulatory effect only after right hemisphere lesions. Among neuropsychological variables, only spatial neglect influences estimation of non-biological movement.
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Affiliation(s)
- Valentina Pacella
- grid.412041.20000 0001 2106 639XGroupe d’Imagerie NeurofonctionnelleInstitut des Maladies Neurodégénératives-UMR 5293, CNRS, CEA, University of Bordeaux, 146 Rue Léo Saignat, CS 61292, 33076 Bordeaux Cedex, France ,grid.462844.80000 0001 2308 1657Brain Connectivity and Behaviour Laboratory, Sorbonne Universities, Paris, France
| | - M. Scandola
- grid.5611.30000 0004 1763 1124NPSY-Lab.VR, Department of Human Sciences, University of Verona, Lungadige Porta Vittoria 17, 37129 Verona, Italy
| | - M. Bà
- grid.5611.30000 0004 1763 1124NPSY-Lab.VR, Department of Human Sciences, University of Verona, Lungadige Porta Vittoria 17, 37129 Verona, Italy
| | - N. Smania
- Neurorehabilitation Unit, Department of Neurosciences, Hospital Trust of Verona, Verona, Italy
| | - M. Beccherle
- grid.7841.aDepartment of Psychology, University La Sapienza, Rome, Italy
| | - E. Rossato
- Department of Rehabilitation, IRCSS Sacro Cuore Don Calabria, 37024 Negrar, Verona, Italy
| | - D. Volpe
- Department of Neurorehabilitation, Parkinson’s Disease Excellence Center, Fresco Institute Italy - NYU Langone, Casa di Cura Villa Margherita via Costacolonna n 1 Arcugnano, Vicenza, Italy
| | - Valentina Moro
- grid.5611.30000 0004 1763 1124NPSY-Lab.VR, Department of Human Sciences, University of Verona, Lungadige Porta Vittoria 17, 37129 Verona, Italy
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Coelho P, Rodrigues JA, Nascimento Alves P, Fonseca AC. Time perception changes in stroke patients: A systematic literature review. Front Neurol 2022; 13:938367. [PMID: 35928126 PMCID: PMC9343772 DOI: 10.3389/fneur.2022.938367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 06/27/2022] [Indexed: 11/30/2022] Open
Abstract
Introduction Time perception comprises the subjective experience of passing of time and of the duration of an event. Although already described in some neurological and psychiatric conditions, there is a paucity of details regarding this neurocognitive change in stroke patients. We aimed to describe time perception dysfunction in stroke patient. Methods We performed a systematic review of the literature in Pubmed, PsycInfo and EMBASE including manuscripts from their inception until December 2020. We collected data regarding the type of time perception that was detected, type of stroke, most common location of lesions, evaluation tests that were used and time of evaluation after stroke onset. Results A total of 27 manuscripts were selected, concerning a total of 418 patients (n = 253 male; 60.5%). Most manuscripts (n = 21) evaluated patients with ischaemic lesions (n = 407; 97.4%). The majority referred to evaluations between 2 months and seven years after stroke. Underestimation in temporal evaluation in sub- and supra-second was the most common dysfunction (n = 165; 41.7%). Overestimation of time (n = 116; 27.8%) and impaired time interval comparison (n = 88; 22.2%) were also found. Most patients had right hemisphere lesions (n = 219 patients; 52.4%). Common reported lesion locations included the thalamus, insula, basal ganglia, dorsolateral prefrontal cortex, parietal cortex including supramarginal, angular gyrus and right inferior parietal cortex and cerebellum. Conclusion There are multiple stroke locations associated with time perception dysfunction, which highlights the complex system involved in time perception. There is still scarce knowledge about specific time perception deficits after stroke. Most studies rely in psychometric analysis without clear clinical and functional translation, namely regarding impact on daily activities.
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Affiliation(s)
- Pedro Coelho
- Serviço de Neurologia, Departamento de Neurociências e Saúde Mental, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal
- Centro de Estudos Egas Moniz, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- *Correspondence: Pedro Coelho
| | - Joana Amado Rodrigues
- Clínica Universitária de Neurologia, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Pedro Nascimento Alves
- Serviço de Neurologia, Departamento de Neurociências e Saúde Mental, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal
- Centro de Estudos Egas Moniz, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Laboratório de Estudos de Linguagem, Centro de Estudos Egas Moniz, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Ana Catarina Fonseca
- Serviço de Neurologia, Departamento de Neurociências e Saúde Mental, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal
- Centro de Estudos Egas Moniz, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Clínica Universitária de Neurologia, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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McWilliams K, Kaplan A, Eline EE, Kaminer I, Zodrow S, Petersen J, Williams JM, Osipowicz K. Cortical Semantization of Autobiographical Memory over Subjective Chronological Time: an fMRI Study. Eur J Neurosci 2022; 55:1798-1809. [PMID: 35304784 DOI: 10.1111/ejn.15652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/05/2022] [Accepted: 03/02/2022] [Indexed: 11/29/2022]
Abstract
The content and neural representation of autobiographical memories change over time, however, these changes are poorly understood. We hypothesize that the content of memories becomes semanticized, while the neural representation moves from mesial to cortical structures. We conducted an fMRI (Functional Magnetic Resonance Imaging) study on the effects of time on autobiographical memory retrieval. Twenty healthy participants were cued by a selection of photographs that represented distinct episodic memories from 1, 2, 6, and 14 years prior to scanning. Our behavioral data of self-report measures of memory qualia suggests a loss of episodic content over time. GLM (General Linear Model) results demonstrate that across all time points, visual association cortices and mesial temporal lobes were activated. However, we did not observe any GLM differences between memory time-points. We used SVM (Support Vector Machine) in order to predict memory time-point based on neural activation patterns. We were able to accurately predict classification accuracy for the one year (66.7%), two year (66.7%), and fourteen year (33.4%) memory time points, with an overall classification accuracy of 55.6%. We suggest that our findings can be interpreted in light of cortical semantization; as memories age, they become more semanticized and shift in representation towards cortical structures.
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Affiliation(s)
| | | | - Ellen E Eline
- Department of Psychology, Drexel University, Philadelphia, PA
| | | | - Shauna Zodrow
- Department of Psychology, Drexel University, Philadelphia, PA
| | - Julie Petersen
- Department of Psychology, Drexel University, Philadelphia, PA
| | | | - Karol Osipowicz
- Department of Psychology, Drexel University, Philadelphia, PA
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7
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Magnani B, Musetti A, Frassinetti F. Neglect in temporal domain: Amelioration following a prismatic adaptation treatment and implications in everyday life. A single case study. Brain Cogn 2021; 150:105712. [PMID: 33773399 DOI: 10.1016/j.bandc.2021.105712] [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: 12/21/2020] [Revised: 02/24/2021] [Accepted: 02/25/2021] [Indexed: 11/18/2022]
Abstract
As in line bisection, in time bisection, neglect patients fail to process the first/left part of time representation (Mental-Time-Line-MTL) resulting in a rightward shift of the interval midpoint. A leftward shift of spatial attention after one session of prismatic-adaptation (PA) reduces this deficit. The impact on daily life of time deficit is little investigated in neglect. Here we study the time deficit and its ecological impact in an outpatient with neglect (LL) and the effects of a PA-treatment (ten sessions) on the deficit and its impact. Before and after PA-treatment, LL completed a: time-bisection-task assessing the MTL in the milliseconds-seconds range; lifespan-task assessing the MTL in the lifespan range; qualitative interview assessing the impact on daily routines. Patient's performance on the tasks was compared with the performance of non-neurological controls. Before PA-treatment, LL showed a rightward shift in the time-bisection-task and a compression of life events distribution in the lifespan-task. The feeling "to be forward in time" emerged in the interview. The PA-treatment reduced the deficits in the tasks and the feeling "to be forward in time" in the interview. PA-treatment is suggested as a powerful instrument for the reduction of time deficit and its ecological impact in neglect patients.
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Affiliation(s)
- Barbara Magnani
- Centro INforma-MEnte, Via Brigata Reggio 32, 42124 Reggio Emilia, Italy.
| | - Alessandro Musetti
- Department of Humanities, Social Sciences and Cultural Industries, University of Parma, Via Borgo Carissimi 10, 43121 Parma, Italy.
| | - Francesca Frassinetti
- Department of Psychology, University of Bologna, Viale Berti Pichat 5, 40127 Bologna, Italy; Maugeri Clinical Scientific Institutes - IRCCS of Castel Goffredo, Via Ospedale 36, 46042 Castel Goffredo, Mantova, Italy.
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8
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Monsa R, Peer M, Arzy S. Processing of Different Temporal Scales in the Human Brain. J Cogn Neurosci 2020; 32:2087-2102. [DOI: 10.1162/jocn_a_01615] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Abstract
While recalling life events, we reexperience events of different durations, ranging across varying temporal scales, from several minutes to years. However, the brain mechanisms underlying temporal cognition are usually investigated only in small-scale periods—milliseconds to minutes. Are the same neurocognitive systems used to organize memory at different temporal scales? Here, we asked participants to compare temporal distances (time elapsed) to personal events at four different temporal scales (hour, day, week, and month) under fMRI. Cortical activity showed temporal scale sensitivity at the medial and lateral parts of the parietal lobe, bilaterally. Activity at the medial parietal cortex also showed a gradual progression from large- to small-scale processing, along a posterior–anterior axis. Interestingly, no sensitivity was found along the hippocampal long axis. In the medial scale-sensitive region, most of the voxels were preferentially active for the larger scale (month), and in the lateral region, scale selectivity was higher for the smallest scale (hour). These results demonstrate how scale-selective activity characterizes autobiographical memory processing and may provide a basis for understanding how the human brain processes and integrates experiences across timescales in a hierarchical manner.
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Affiliation(s)
- Rotem Monsa
- The Hebrew University of Jerusalem Medical School
| | - Michael Peer
- The Hebrew University of Jerusalem Medical School
- University of Pennsylvania
| | - Shahar Arzy
- The Hebrew University of Jerusalem Medical School
- Hadassah Medical Center, Jerusalem, Israel
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9
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Van Vleet T, Bonato P, Fabara E, Dabit S, Kim S, Chiu C, Bisogno AL, Merzenich M, Corbetta M, DeGutis J. Alertness Training Improves Spatial Bias and Functional Ability in Spatial Neglect. Ann Neurol 2020; 88:747-758. [DOI: 10.1002/ana.25862] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 07/21/2020] [Accepted: 07/26/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Thomas Van Vleet
- Department of Research and Development Posit Science Inc San Francisco CA USA
| | - Paolo Bonato
- Department of Physical Medicine & Rehabilitation, Harvard Medical School Spaulding Rehabilitation Hospital Boston MA USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University Boston MA USA
| | - Eric Fabara
- Wyss Institute for Biologically Inspired Engineering, Harvard University Boston MA USA
| | - Sawsan Dabit
- Department of Research and Development Posit Science Inc San Francisco CA USA
| | - Sarah‐Jane Kim
- Department of Research and Development Posit Science Inc San Francisco CA USA
| | - Christopher Chiu
- Department of Psychology University of Massachusetts Boston MA USA
| | - Antonio Luigi Bisogno
- Clinica Neurologica, Department of Neuroscience, and Padova Neuroscience Center (PNC) University of Padova Italy
| | - Michael Merzenich
- Department of Research and Development Posit Science Inc San Francisco CA USA
- School of Medicine University of California San Francisco CA USA
| | - Maurizio Corbetta
- Clinica Neurologica, Department of Neuroscience, and Padova Neuroscience Center (PNC) University of Padova Italy
- Department of Neurology, Radiology Neuroscience Washington University School of Medicine St. Louis MO USA
- Venetian Institute of Molecular Medicine, VIMM Padova Italy
| | - Joseph DeGutis
- Boston Attention and Learning Laboratory, VA Boston Healthcare System Boston MA USA
- Department of Psychiatry Harvard Medical School Boston MA USA
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Teghil A, Di Vita A, Pietranelli V, Matano A, Boccia M. Duration reproduction in regular and irregular contexts after unilateral brain damage: Evidence from voxel-based lesion-symptom mapping and atlas-based hodological analysis. Neuropsychologia 2020; 147:107577. [PMID: 32758553 DOI: 10.1016/j.neuropsychologia.2020.107577] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 07/27/2020] [Accepted: 07/30/2020] [Indexed: 02/07/2023]
Abstract
It has been proposed that not completely overlapping brain networks support interval timing depending on whether or not an external, predictable temporal cue is provided during the task, aiding time estimation. Here we tested this hypothesis in a neuropsychological study, using both a topological approach - through voxel-based lesion-symptom mapping (VLSM), that assesses the relation between continuous behavioral scores and lesion information on a voxel-by-voxel basis - and a hodological approach, using an atlas-based tractography. A group of patients with unilateral focal brain lesions and their matched controls performed a duration reproduction task assessing time processing in two conditions, namely with regularly spaced stimuli during encoding and reproduction (Regular condition), and with irregularly spaced stimuli during the same task (Irregular condition). VLSM analyses showed that scores in the two conditions were associated with lesions involving partly separable clusters of voxels, with lower performance only in the Irregular condition being related to lesions involving the right insular cortex. Performance in both conditions correlated with the probability of disconnection of the right frontal superior longitudinal tract, and of the superior and middle branches of the right superior longitudinal fasciculus. These findings suggest that the dissociation between timing in regular and irregular contexts is not complete, since performance in both conditions relies on the integrity of a common suprasecond timing network. Furthermore, they are consistent with the hypothesis that tracking time without the aid of external cues selectively relies on the integration of psychophysiological changes in the right insula.
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Affiliation(s)
- Alice Teghil
- Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Fondazione Santa Lucia, Rome, Italy.
| | - Antonella Di Vita
- Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Fondazione Santa Lucia, Rome, Italy; Department of Psychology, "Sapienza" University of Rome, Rome, Italy
| | | | | | - Maddalena Boccia
- Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Fondazione Santa Lucia, Rome, Italy; Department of Psychology, "Sapienza" University of Rome, Rome, Italy
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11
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Visual working memory deficits following right brain damage. Brain Cogn 2020; 142:105566. [DOI: 10.1016/j.bandc.2020.105566] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 03/19/2020] [Accepted: 03/19/2020] [Indexed: 11/27/2022]
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12
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Prisms for timing better: A review on application of prism adaptation on temporal domain. Cortex 2019; 119:583-593. [DOI: 10.1016/j.cortex.2018.10.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 09/04/2018] [Accepted: 10/12/2018] [Indexed: 01/29/2023]
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13
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Anelli F, Avanzi S, Damora A, Mancuso M, Frassinetti F. Mental time travel and functional daily life activities in neglect patients: Recovery effects of rehabilitation by prism adaptation. Cortex 2019; 113:141-155. [DOI: 10.1016/j.cortex.2018.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 10/19/2018] [Accepted: 12/04/2018] [Indexed: 11/28/2022]
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Howard CJ, Boulton H, Bedwell SA, Boatman CA, Roberts KL, Mitra S. Low-Frequency Repetitive Transcranial Magnetic Stimulation to Right Parietal Cortex Disrupts Perception of Briefly Presented Stimuli. Perception 2019; 48:346-355. [PMID: 30832537 DOI: 10.1177/0301006619834251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Right parietal cortex has recently been linked to the temporal resolution of attention. We therefore sought to investigate whether disruption to right parietal cortex would affect attention to visual stimuli presented for brief durations. Participants performed a visual discrimination task before and after 10 minutes repetitive transcranial magnetic stimulation (1 Hz) to right or central parietal cortex as well as 20 minutes after the second block of trials. Participants reported the spatial frequency of a masked Gabor patch presented for a brief duration of 60, 120, or 240 ms. We calculated error magnitudes by comparing accuracy to a guessing model. We then compared error magnitudes to blocks with no stimulation, producing a measure of baselined performance. Baselined performance was poorer at longer stimulus durations after right parietal than central parietal stimulation, suggesting that right parietal cortex is involved in attention to briefly presented stimuli, particularly in situations where rapid accumulation of visual evidence is needed.
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Salillas E, Korostenskaja M, Kleineschay T, Mehta S, Vega A, Castillo EM. A MEG Study on the Processing of Time and Quantity: Parietal Overlap but Functional Divergence. Front Psychol 2019; 10:139. [PMID: 30778314 PMCID: PMC6369182 DOI: 10.3389/fpsyg.2019.00139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 01/15/2019] [Indexed: 11/16/2022] Open
Abstract
A common magnitude system for the processing of time and numerosity, supported by areas in the posterior parietal cortex, has been proposed by some authors. The present study aims to investigate possible intersections between the neural processing of non-numerical (time) and numerical magnitudes in the posterior parietal lobe. Using Magnetoencephalography for the comparison of brain source activations during the processing of duration and numerosity contrasts, we demonstrate parietal overlap as well as dissociations between these two dimensions. Within the parietal cortex, the main areas of overlap were bilateral precuneus, bilateral intraparietal sulci, and right supramarginal gyrus. Interestingly, however, these regions did not equivalently correlated with the behavior for the two dimensions: left and right precuneus together with the right supramarginal gyrus accounted functionally for durational judgments, whereas numerosity judgments were accounted by the activation pattern in the right intraparietal sulcus. Present results, indeed, demonstrate an overlap between the neural substrates for processing duration and quantity. However, the functional relevance of parietal overlapping areas for each dimension is not the same. In fact, our data indicates that the same parietal sites rule differently non-numerical and numerical dimensions, as parts of broader networks.
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Affiliation(s)
- Elena Salillas
- Department of Neurosciences, University of Padova, Padova, Italy
| | - Milena Korostenskaja
- Functional Brain Mapping and Brain Computer Interface Laboratory, Florida Hospital for Children, Orlando, FL, United States.,MEG Lab, Florida Hospital for Children, Orlando, FL, United States.,Florida Epilepsy Center, Florida Hospital, Orlando, FL, United States
| | - Tara Kleineschay
- MEG Lab, Florida Hospital for Children, Orlando, FL, United States.,Florida Epilepsy Center, Florida Hospital, Orlando, FL, United States
| | - Shivani Mehta
- Functional Brain Mapping and Brain Computer Interface Laboratory, Florida Hospital for Children, Orlando, FL, United States
| | - Alexandra Vega
- Functional Brain Mapping and Brain Computer Interface Laboratory, Florida Hospital for Children, Orlando, FL, United States
| | - Eduardo Martinez Castillo
- MEG Lab, Florida Hospital for Children, Orlando, FL, United States.,Florida Epilepsy Center, Florida Hospital, Orlando, FL, United States
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16
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Number, time, and space are not singularly represented: Evidence against a common magnitude system beyond early childhood. Psychon Bull Rev 2019; 26:833-854. [PMID: 30684249 DOI: 10.3758/s13423-018-1561-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Our ability to represent temporal, spatial, and numerical information is critical for understanding the world around us. Given the prominence of quantitative representations in the natural world, numerous cognitive, neurobiological, and developmental models have been proposed as a means of describing how we track quantity. One prominent theory posits that time, space, and number are represented by a common magnitude system, or a common neural locus (i.e., Bonn & Cantlon in Cognitive Neuropsychology, 29(1/2), 149-173, 2012; Cantlon, Platt, & Brannon in Trends in Cognitive Sciences, 13(2), 83-91, 2009; Meck & Church in Animal Behavior Processes, 9(3), 320, 1983; Walsh in Trends in Cognitive Sciences, 7(11), 483-488, 2003). Despite numerous similarities in representations of time, space, and number, an increasing body of literature reveals striking dissociations in how each quantity is processed, particularly later in development. These findings have led many researchers to consider the possibility that separate systems may be responsible for processing each quantity. This review will analyze evidence in favor of a common magnitude system, particularly in infancy, which will be tempered by counter evidence, the majority of which comes from experiments with children and adult participants. After reviewing the current data, we argue that although the common magnitude system may account for quantity representations in infancy, the data do not provide support for this system throughout the life span. We also identify future directions for the field and discuss the likelihood of the developmental divergence model of quantity representation, like that of Newcombe (Ecological Psychology, 2, 147-157, 2014), as a more plausible account of quantity development.
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17
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Huberle E, Brugger P. Altered time judgements highlight common mechanisms of time and space perception. Cogn Neuropsychol 2018; 35:458-470. [PMID: 30497331 DOI: 10.1080/02643294.2018.1549027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Space, numbers and time share similar processing mechanisms mediated by parietal cortex. In parallel to the spatial representation of numbers along a horizontal line, temporal information is mapped on a horizontal axis with short intervals (and the past) represented to the left of long intervals (and the future). Little is known about the representation of time in the presence of visuo-spatial deficits. We here report two experiments on the comparative judgment of time. Experiment 1 required patients with left-sided neglect to indicate which of two consecutively presented silent intervals was longer. Their judgments were better if the first interval was longer and they judged the first interval longer on trials in which the two intervals were equally long. These results were not present in right-hemispheric damaged patients without neglect and healthy controls. They are in line with a previously reported finding in a single patient with neglect, but not readily compatible with findings of neglect patients' comparative length judgments. In Experiment 2, healthy participants' performance on an identical task improved for trials with a first-longer interval after caloric vestibular stimulation (CVS) of the right ear with warm water.
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Affiliation(s)
- Elisabeth Huberle
- a Neuropsychology Unit, Department of Neurology , University Hospital Zurich , Zürich , Switzerland
| | - Peter Brugger
- a Neuropsychology Unit, Department of Neurology , University Hospital Zurich , Zürich , Switzerland
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18
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Nature and nurture effects on the spatiality of the mental time line. Sci Rep 2018; 8:11710. [PMID: 30076378 PMCID: PMC6076263 DOI: 10.1038/s41598-018-29584-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 07/03/2018] [Indexed: 01/29/2023] Open
Abstract
The nature-nurture debate regarding the origin of mental lines is fundamental for cognitive neuroscience. We examined natural-nurture effects on the mental time line, applying three different challenges to the directionality of time representation. We tested (1) patients with left-neglect and healthy participants, who are (2) left-to-right or right-to-left readers/writers, using (3) a lateralized left-right button press or a vocal mode in response to a mental time task, which asks participants to judge whether events have already happened in the past or are still to happen in the future. Using lateralized responses, a spatial-temporal association of response code (STEARC) effect was found, in concordance with the cultural effects. With vocal responses (no lateralization), past and future events showed similar results in both cultures. In patients with neglect, who have a deficit of spatial attention in processing the left side of space, future events were processed more slowly and less accurately than past events in both cultures. Our results indicate the existence of a “natural” disposition to map past and future events along a horizontal mental time line, which is affected by the different ways in which spatial representation of time is introduced.
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19
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Caravaglios G, Castro G, Muscoso EG, Crivelli D, Balconi M. Beta Responses in Healthy Elderly and in Patients With Amnestic Mild Cognitive Impairment During a Task of Temporal Orientation of Attention. Clin EEG Neurosci 2018; 49:258-271. [PMID: 27807013 DOI: 10.1177/1550059416676144] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Recent studies demonstrated that beta oscillations are elicited during cognitive processes. To investigate their potential as electrophysiological markers of amnestic mild cognitive impairment (aMCI), we recorded beta EEG activity during resting and during an omitted tone task in patients and healthy elderly. Thirty participants were enrolled (15 patients, 15 healthy controls). In particular, we investigated event-related spectral perturbation and intertrial coherence indices. Analyses showed that ( a) healthy elderly presented greater beta power at rest than patients with aMCI patients; ( b) during the task, healthy elderly were more accurate than aMCI patients and presented greater beta power than aMCI patients; ( c) both groups showed qualitatively similar spectral perturbation responses during the task, but different spatiotemporal response patterns; and ( d) aMCI patients presented greater beta phase locking than healthy elderly during the task. Results indicate that beta activity in healthy elderly differs from that of patients with aMCI. Furthermore, the analysis of task-related EEG activity extends evidences obtained during resting and suggests that during the prodromal phase of Alzheimer's disease there is a reduced efficiency in information exchange by large-scale neural networks. The study for the first time shows the potential of task-related beta responses as early markers of aMCI impairments.
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Affiliation(s)
- Giuseppe Caravaglios
- 1 Department of Neurology, Center for AD Diagnosis and Care, Cannizzaro Hospital, Catania, Italy
| | - Giuseppe Castro
- 2 Local Health Department of Catania, Semi-residential Center for Dementia of Acireale, Acireale (CT), Italy
| | - Emma Gabriella Muscoso
- 1 Department of Neurology, Center for AD Diagnosis and Care, Cannizzaro Hospital, Catania, Italy
| | - Davide Crivelli
- 3 Research Unit in Affective and Social Neuroscience, Catholic University of the Sacred Heart, Milan, Italy.,4 Department of Psychology, Catholic University of the Sacred Heart, Milan, Italy
| | - Michela Balconi
- 3 Research Unit in Affective and Social Neuroscience, Catholic University of the Sacred Heart, Milan, Italy.,4 Department of Psychology, Catholic University of the Sacred Heart, Milan, Italy
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20
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Ogourtsova T, Archambault PS, Lamontagne A. Post-stroke visual neglect affects goal-directed locomotion in different perceptuo-cognitive conditions and on a wide visual spectrum. Restor Neurol Neurosci 2018; 36:313-331. [PMID: 29782328 DOI: 10.3233/rnn-170766] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Unilateral spatial neglect (USN), a highly prevalent and disabling post-stroke deficit, has been shown to affect the recovery of locomotion. However, our current understanding of USN role in goal-directed locomotion control, and this, in different cognitive/perceptual conditions tapping into daily life demands, is limited. OBJECTIVES To examine goal-directed locomotion abilities in individuals with and without post-stroke USN vs. healthy controls. METHODS Participants (n = 45, n = 15 per group) performed goal-directed locomotion trials to actual, remembered and shifting targets located 7 m away at 0° and 15° right/left while immersed in a 3-D virtual environment. RESULTS Greater end-point mediolateral displacement and heading errors (end-point accuracy measures) were found for the actual and the remembered left and right targets among those with post-stroke USN compared to the two other groups (p < 0.05). A delayed onset of reorientation to the left and right shifting targets was also observed in USN+ participants vs. the other two groups (p < 0.05). Results on clinical near space USN assessment and walking speed explained only a third of the variance in goal-directed walking performance. CONCLUSION Post-stroke USN was found to affect goal-directed locomotion in different perceptuo-cognitive conditions, both to contralesional and ipsilesional targets, demonstrating the presence of lateralized and non-lateralized deficits. Beyond neglect severity and walking capacity, other factors related to attention, executive functioning and higher-order visual perceptual abilities (e.g. optic flow perception) may account for the goal-directed walking deficits observed in post-stroke USN+. Goal-directed locomotion can be explored in the design of future VR-based evaluation and training tools for USN to improve the currently used conventional methods.
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Affiliation(s)
- Tatiana Ogourtsova
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada.,Feil-Oberfeld Research Centre, Jewish Rehabilitation Hospital, Laval, QC, Canada
| | - Philippe S Archambault
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada.,Feil-Oberfeld Research Centre, Jewish Rehabilitation Hospital, Laval, QC, Canada
| | - Anouk Lamontagne
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada.,Feil-Oberfeld Research Centre, Jewish Rehabilitation Hospital, Laval, QC, Canada
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21
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Anelli F, Avanzi S, Arzy S, Mancuso M, Frassinetti F. Effects of spatial attention on mental time travel in patients with neglect. Cortex 2018; 101:192-205. [DOI: 10.1016/j.cortex.2018.01.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 11/04/2017] [Accepted: 01/17/2018] [Indexed: 11/30/2022]
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22
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Choy EEH, Cheung H. Linguistic asymmetry, egocentric anchoring, and sensory modality as factors for the observed association between time and space perception. Cogn Process 2017; 18:479-490. [PMID: 28516394 DOI: 10.1007/s10339-017-0817-6] [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: 08/15/2016] [Accepted: 05/13/2017] [Indexed: 11/25/2022]
Abstract
Temporal and spatial representations have been consistently shown to be inextricably intertwined. However, the exact nature of time-space mapping remains unknown. On the one hand, the conceptual metaphor theory postulates unilateral, asymmetric mapping of time onto space, that is, time is perceived in spatial terms but the perception of space is relatively independent of time. On the other hand, a theory of magnitude assumes bilateral and symmetric interactions between temporal and spatial perceptions. In the present paper, we argue that the concepts of linguistic asymmetry, egocentric anchoring, and sensory modality provide potential explanations for why evidences favoring both asymmetry and symmetry have been obtained. We first examine the asymmetry model and suggest that language plays a critical role in it. Next, we discuss the symmetry model in relation to egocentric anchoring and sensory modality. We conclude that since these three factors may jointly account for some conflicting past results regarding the strength and directionality of time-space mapping, they should be taken into serious consideration in future test designs.
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Affiliation(s)
- Eunice E Hang Choy
- Department of Psychology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Him Cheung
- Department of Psychology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong.
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23
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Brunec IK, Ozubko JD, Barense MD, Moscovitch M. Recollection-dependent memory for event duration in large-scale spatial navigation. ACTA ACUST UNITED AC 2017; 24:104-114. [PMID: 28202714 PMCID: PMC5311383 DOI: 10.1101/lm.044032.116] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 12/04/2016] [Indexed: 01/27/2023]
Abstract
Time and space represent two key aspects of episodic memories, forming the spatiotemporal context of events in a sequence. Little is known, however, about how temporal information, such as the duration and the order of particular events, are encoded into memory, and if it matters whether the memory representation is based on recollection or familiarity. To investigate this issue, we used a real world virtual reality navigation paradigm where periods of navigation were interspersed with pauses of different durations. Crucially, participants were able to reliably distinguish the durations of events that were subjectively “reexperienced” (i.e., recollected), but not of those that were familiar. This effect was not found in temporal order (ordinal) judgments. We also show that the active experience of the passage of time (holding down a key while waiting) moderately enhanced duration memory accuracy. Memory for event duration, therefore, appears to rely on the hippocampally supported ability to recollect or reexperience an event enabling the reinstatement of both its duration and its spatial context, to distinguish it from other events in a sequence. In contrast, ordinal memory appears to rely on familiarity and recollection to a similar extent.
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Affiliation(s)
- Iva K Brunec
- Department of Psychology, University of Toronto, Toronto, Ontario M5S 3G3, Canada.,Rotman Research Institute at Baycrest, Toronto, Ontario M6A 2E1, Canada
| | - Jason D Ozubko
- Rotman Research Institute at Baycrest, Toronto, Ontario M6A 2E1, Canada.,Department of Psychology, State University of New York at Geneseo, Geneseo, New York 14454, USA
| | - Morgan D Barense
- Department of Psychology, University of Toronto, Toronto, Ontario M5S 3G3, Canada.,Rotman Research Institute at Baycrest, Toronto, Ontario M6A 2E1, Canada
| | - Morris Moscovitch
- Department of Psychology, University of Toronto, Toronto, Ontario M5S 3G3, Canada.,Rotman Research Institute at Baycrest, Toronto, Ontario M6A 2E1, Canada
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24
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Low E, Laycock R, Crewther S. Neural Markers Associated with the Temporal Deployment of Attention: A Systematic Review of Non-motor Psychophysical Measures Post-stroke. Front Hum Neurosci 2017; 11:31. [PMID: 28239343 PMCID: PMC5301011 DOI: 10.3389/fnhum.2017.00031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Accepted: 01/16/2017] [Indexed: 11/13/2022] Open
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25
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Manohar SG, Husain M. Working Memory for Sequences of Temporal Durations Reveals a Volatile Single-Item Store. Front Psychol 2016; 7:1655. [PMID: 27833574 PMCID: PMC5080358 DOI: 10.3389/fpsyg.2016.01655] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 10/10/2016] [Indexed: 11/13/2022] Open
Abstract
When a sequence is held in working memory, different items are retained with differing fidelity. Here we ask whether a sequence of brief time intervals that must be remembered show recency effects, similar to those observed in verbal and visuospatial working memory. It has been suggested that prioritizing some items over others can be accounted for by a "focus of attention," maintaining some items in a privileged state. We therefore also investigated whether such benefits are vulnerable to disruption by attention or expectation. Participants listened to sequences of one to five tones, of varying durations (200 ms to 2 s). Subsequently, the length of one of the tones in the sequence had to be reproduced by holding a key. The discrepancy between the reproduced and actual durations quantified the fidelity of memory for auditory durations. Recall precision decreased with the number of items that had to be remembered, and was better for the first and last items of sequences, in line with set-size and serial position effects seen in other modalities. To test whether attentional filtering demands might impair performance, an irrelevant variation in pitch was introduced in some blocks of trials. In those blocks, memory precision was worse for sequences that consisted of only one item, i.e., the smallest memory set-size. Thus, when irrelevant information was present, the benefit of having only one item in memory is attenuated. Finally we examined whether expectation could interfere with memory. On half the trials, the number of items in the upcoming sequence was cued. When the number of items was known in advance, performance was paradoxically worse when the sequence consisted of only one item. Thus the benefit of having only one item to remember is stronger when it is unexpectedly the only item. Our results suggest that similar mechanisms are used to hold auditory time durations in working memory, as for visual or verbal stimuli. Further, solitary items were remembered better when more items were expected, but worse when irrelevant features were present. This suggests that the "privileged" state of one item in memory is particularly volatile and susceptible to interference.
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Affiliation(s)
- Sanjay G. Manohar
- Nuffield Department of Clinical Neurosciences, University of OxfordOxford, UK
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26
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Bolognini N, Convento S, Casati C, Mancini F, Brighina F, Vallar G. Multisensory integration in hemianopia and unilateral spatial neglect: Evidence from the sound induced flash illusion. Neuropsychologia 2016; 87:134-143. [PMID: 27197073 DOI: 10.1016/j.neuropsychologia.2016.05.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 05/13/2016] [Accepted: 05/14/2016] [Indexed: 11/24/2022]
Abstract
Recent neuropsychological evidence suggests that acquired brain lesions can, in some instances, abolish the ability to integrate inputs from different sensory modalities, disrupting multisensory perception. We explored the ability to perceive multisensory events, in particular the integrity of audio-visual processing in the temporal domain, in brain-damaged patients with visual field defects (VFD), or with unilateral spatial neglect (USN), by assessing their sensitivity to the 'Sound-Induced Flash Illusion' (SIFI). The study yielded two key findings. Firstly, the 'fission' illusion (namely, seeing multiple flashes when a single flash is paired with multiple sounds) is reduced in both left- and right-brain-damaged patients with VFD, but not in right-brain-damaged patients with left USN. The disruption of the fission illusion is proportional to the extent of the occipital damage. Secondly, a reliable 'fusion' illusion (namely, seeing less flashes when a single sound is paired with multiple flashes) is evoked in USN patients, but neither in VFD patients nor in healthy participants. A control experiment showed that the fusion, but not the fission, illusion is lost in older participants (>50 year-old), as compared with younger healthy participants (<30 year-old). This evidence indicates that the fission and fusion illusions are dissociable multisensory phenomena, altered differently by impairments of visual perception (i.e. VFD) and spatial attention (i.e. USN). The occipital cortex represents a key cortical site for binding auditory and visual stimuli in the SIFI, while damage to right-hemisphere areas mediating spatial attention and awareness does not prevent the integration of audio-visual inputs in the temporal domain.
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Affiliation(s)
- Nadia Bolognini
- Department of Psychology, and Milan Center for Neuroscience - NeuroMi, University of Milano-Bicocca, Milano, Italy; Laboratory of Neuropsychology, and Department of Neurorehabilitation Sciences, IRCSS Istituto Auxologico, Milano, Italy.
| | - Silvia Convento
- Department of Psychology, and Milan Center for Neuroscience - NeuroMi, University of Milano-Bicocca, Milano, Italy; Department of Neuroscience, Baylor College of Medicine, Houston, USA
| | - Carlotta Casati
- Laboratory of Neuropsychology, and Department of Neurorehabilitation Sciences, IRCSS Istituto Auxologico, Milano, Italy
| | - Flavia Mancini
- Department of Neuroscience, Physiology & Pharmacology, University College London, London, UK
| | - Filippo Brighina
- Department of Experimental Biomedicine and Clinical Neuroscience, University of Palermo, Palermo, Italy
| | - Giuseppe Vallar
- Department of Psychology, and Milan Center for Neuroscience - NeuroMi, University of Milano-Bicocca, Milano, Italy; Laboratory of Neuropsychology, and Department of Neurorehabilitation Sciences, IRCSS Istituto Auxologico, Milano, Italy
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27
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Low E, Crewther SG, Perre DL, Ben Ong, Laycock R, Tu H, Wijeratne T. Beyond Neglect: Preliminary Evidence of Retrospective Time Estimation Abnormalities in Non-Neglect Stroke and Transient Ischemic Attack Patients. Sci Rep 2016; 6:22598. [PMID: 26940859 PMCID: PMC4778116 DOI: 10.1038/srep22598] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 02/17/2016] [Indexed: 12/16/2022] Open
Abstract
Perception of the passage of time is essential for safe planning and navigation of everyday activities. Findings from the literature have demonstrated a gross underestimation of time interval in right-hemisphere damaged neglect patients, but not in non-neglect unilaterally-damaged patients, compared to controls. This study aimed to investigate retrospective estimation of the duration of a target detection task over two occasions, in 30 stroke patients (12 left-side stroke 15 right-side stroke, and 3 right-side stroke with neglect) and 10 transient ischemic attack patients, relative to 31 age-matched controls. Performances on visual short-term and working memory tasks were also examined to investigate the associations between timing abilities with residual cognitive functioning. Initial results revealed evidence of perceptual time underestimation, not just in neglect patients, but also in non-neglect unilaterally-damaged stroke patients and transient ischemic attack patients. Three months later, underestimation of time persisted only in left-side stroke and right-side stroke with neglect patients, who also demonstrated reduced short-term and working memory abilities. Findings from this study suggest a predictive role of residual cognitive impairments in determining the prognosis of perceptual timing abnormalities.
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Affiliation(s)
- Essie Low
- Department of Psychology and Counselling, La Trobe University, Bundoora, Victoria, Australia
| | - Sheila G Crewther
- Department of Psychology and Counselling, La Trobe University, Bundoora, Victoria, Australia
| | - Diana L Perre
- Neuroscience Research Unit, Sunshine Hospital, Western Health, Victoria, Australia.,Department of Psychology, Sunshine Hospital, Western Health, Victoria, Australia
| | - Ben Ong
- Department of Psychology and Counselling, La Trobe University, Bundoora, Victoria, Australia
| | - Robin Laycock
- Department of Psychology and Counselling, La Trobe University, Bundoora, Victoria, Australia
| | - Hans Tu
- Neuroscience Research Unit, Sunshine Hospital, Western Health, Victoria, Australia.,Department of Neurology, Sunshine Hospital, Western Health, Victoria, Australia
| | - Tissa Wijeratne
- Neuroscience Research Unit, Sunshine Hospital, Western Health, Victoria, Australia.,Department of Neurology, Sunshine Hospital, Western Health, Victoria, Australia
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28
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Moscovitch M, Cabeza R, Winocur G, Nadel L. Episodic Memory and Beyond: The Hippocampus and Neocortex in Transformation. Annu Rev Psychol 2016; 67:105-34. [PMID: 26726963 PMCID: PMC5060006 DOI: 10.1146/annurev-psych-113011-143733] [Citation(s) in RCA: 543] [Impact Index Per Article: 67.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The last decade has seen dramatic technological and conceptual changes in research on episodic memory and the brain. New technologies, and increased use of more naturalistic observations, have enabled investigators to delve deeply into the structures that mediate episodic memory, particularly the hippocampus, and to track functional and structural interactions among brain regions that support it. Conceptually, episodic memory is increasingly being viewed as subject to lifelong transformations that are reflected in the neural substrates that mediate it. In keeping with this dynamic perspective, research on episodic memory (and the hippocampus) has infiltrated domains, from perception to language and from empathy to problem solving, that were once considered outside its boundaries. Using the component process model as a framework, and focusing on the hippocampus, its subfields, and specialization along its longitudinal axis, along with its interaction with other brain regions, we consider these new developments and their implications for the organization of episodic memory and its contribution to functions in other domains.
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Affiliation(s)
- Morris Moscovitch
- Department of Psychology, University of Toronto, Toronto, Ontario M5S 3G3, Canada;
- Rotman Research Institute, Baycrest Center, Toronto, Ontario, M6A 2E1 Canada
- Department of Psychology, Baycrest Center, Toronto, Ontario M6A 2E1, Canada
| | - Roberto Cabeza
- Center for Cognitive Neuroscience, Duke University, Durham, North Carolina 27708;
| | - Gordon Winocur
- Rotman Research Institute, Baycrest Center, Toronto, Ontario, M6A 2E1 Canada
- Department of Psychology, Trent University, Peterborough, Ontario K9J 7B8, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario M5T 1R8, Canada;
| | - Lynn Nadel
- Department of Psychology and Cognitive Science Program, University of Arizona, Tucson, Arizona 85721;
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29
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Masson N, Pesenti M, Dormal V. Duration and numerical estimation in right brain-damaged patients with and without neglect: Lack of support for a mental time line. Br J Psychol 2015; 107:467-83. [DOI: 10.1111/bjop.12155] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 06/29/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Nicolas Masson
- Psychological Sciences Research Institute and Institute of Neuroscience; Catholic University of Louvain; Louvain-la-Neuve Belgium
| | - Mauro Pesenti
- Psychological Sciences Research Institute and Institute of Neuroscience; Catholic University of Louvain; Louvain-la-Neuve Belgium
| | - Valérie Dormal
- Psychological Sciences Research Institute and Institute of Neuroscience; Catholic University of Louvain; Louvain-la-Neuve Belgium
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30
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Danckert J, Anderson B. Updating representations of temporal intervals. Exp Brain Res 2015; 233:3517-26. [PMID: 26303026 DOI: 10.1007/s00221-015-4422-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 08/14/2015] [Indexed: 11/24/2022]
Abstract
Effectively engaging with the world depends on accurate representations of the regularities that make up that world-what we call mental models. The success of any mental model depends on the ability to adapt to changes-to 'update' the model. In prior work, we have shown that damage to the right hemisphere of the brain impairs the ability to update mental models across a range of tasks. Given the disparate nature of the tasks we have employed in this prior work (i.e. statistical learning, language acquisition, position priming, perceptual ambiguity, strategic game play), we propose that a cognitive module important for updating mental representations should be generic, in the sense that it is invoked across multiple cognitive and perceptual domains. To date, the majority of our tasks have been visual in nature. Given the ubiquity and import of temporal information in sensory experience, we examined the ability to build and update mental models of time. We had healthy individuals complete a temporal prediction task in which intervals were initially drawn from one temporal range before an unannounced switch to a different range of intervals. Separate groups had the second range of intervals switch to one that contained either longer or shorter intervals than the first range. Both groups showed significant positive correlations between perceptual and prediction accuracy. While each group updated mental models of temporal intervals, those exposed to shorter intervals did so more efficiently. Our results support the notion of generic capacity to update regularities in the environment-in this instance based on temporal information. The task developed here is well suited to investigations in neurological patients and in neuroimaging settings.
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Affiliation(s)
- James Danckert
- Department of Psychology, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada.
| | - Britt Anderson
- Department of Psychology, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
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Genovesio A, Seitz LK, Tsujimoto S, Wise SP. Context-Dependent Duration Signals in the Primate Prefrontal Cortex. Cereb Cortex 2015. [PMID: 26209845 DOI: 10.1093/cercor/bhv156] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The activity of some prefrontal (PF) cortex neurons distinguishes short from long time intervals. Here, we examined whether this property reflected a general timing mechanism or one dependent on behavioral context. In one task, monkeys discriminated the relative duration of 2 stimuli; in the other, they discriminated the relative distance of 2 stimuli from a fixed reference point. Both tasks had a pre-cue period (interval 1) and a delay period (interval 2) with no discriminant stimulus. Interval 1 elapsed before the presentation of the first discriminant stimulus, and interval 2 began after that stimulus. Both intervals had durations of either 400 or 800 ms. Most PF neurons distinguished short from long durations in one task or interval, but not in the others. When neurons did signal something about duration for both intervals, they did so in an uncorrelated or weakly correlated manner. These results demonstrate a high degree of context dependency in PF time processing. The PF, therefore, does not appear to signal durations abstractedly, as would be expected of a general temporal encoder, but instead does so in a highly context-dependent manner, both within and between tasks.
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Affiliation(s)
- Aldo Genovesio
- Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy
| | - Lucia K Seitz
- Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy
| | - Satoshi Tsujimoto
- Department of Intelligence Science and Technology, Graduate School of Informatics, Kyoto University, Kyoto, Japan Nielsen Neuro, Tokyo, Japan
| | - Steven P Wise
- Olschefskie Institute for the Neurobiology of Knowledge, Potomac, MD 20854, USA Edmond and Lily Safra International Institute of Neurosciences of Natal, Natal, Brazil
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Howard CJ, Bashir N, Chechlacz M, Humphreys GW. Neural Mechanisms of Temporal Resolution of Attention. Cereb Cortex 2015; 26:2952-69. [PMID: 26033892 DOI: 10.1093/cercor/bhv101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The dynamic nature of the world requires that our visual representations are continuously updated. These representations are more precise if there is a narrow time window over which information is averaged. We assess the neural processes of visual updating by testing patients with lesions including inferior parietal cortex, control patients and healthy adults on a continuous visual monitoring task. In Experiment 1, observers kept track of the changing spatial period of a luminance grating and identified the final spatial period after the stimulus disappeared. Healthy older adults and neurological controls were able to perform better than simulated guesses, but only 3 of 11 patients with damage including parietal cortex were able to reach performance that differed from simulated guesses. The effects were unrelated to lesion size. Poor performance on this task is consistent with an inability to selectively attend to the final moment at which the stimulus was seen. To investigate the temporal limits of attention, we varied the rate of stimulus change in Experiment 2. Performance remained poor for some patients even with slow 2.5 Hz change rates. The performance of 4 patients with parietal damage displayed poor temporal precision, namely recovery of performance with slower rates of change.
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Affiliation(s)
- Christina J Howard
- Division of Psychology, Chaucer Building, Nottingham Trent University, Burton Street, Nottingham NG1 4BU, UK School of Psychology, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Naheem Bashir
- School of Psychology, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK Division of Psychology and Language Sciences, University College London, Gower Street, London WC1E 6BT
| | - Magdalena Chechlacz
- Department of Experimental Psychology, Oxford University, South Parks Road, Oxford OX1 3UD, UK
| | - Glyn W Humphreys
- Department of Experimental Psychology, Oxford University, South Parks Road, Oxford OX1 3UD, UK
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Cai ZG, Connell L. Space-time interdependence: evidence against asymmetric mapping between time and space. Cognition 2014; 136:268-81. [PMID: 25506776 DOI: 10.1016/j.cognition.2014.11.039] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 11/03/2014] [Accepted: 11/22/2014] [Indexed: 11/28/2022]
Abstract
Time and space are intimately related, but what is the real nature of this relationship? Is time mapped metaphorically onto space such that effects are always asymmetric (i.e., space affects time more than time affects space)? Or do the two domains share a common representational format and have the ability to influence each other in a flexible manner (i.e., time can sometimes affect space more than vice versa)? In three experiments, we examined whether spatial representations from haptic perception, a modality of relatively low spatial acuity, would lead the effect of time on space to be substantially stronger than the effect of space on time. Participants touched (but could not see) physical sticks while listening to an auditory note, and then reproduced either the length of the stick or the duration of the note. Judgements of length were affected by concurrent stimulus duration, but not vice versa. When participants were allowed to see as well as touch the sticks, however, the higher acuity of visuohaptic perception caused the effects to converge so length and duration influenced each other to a similar extent. These findings run counter to the spatial metaphor account of time, and rather support the spatial representation account in which time and space share a common representational format and the directionality of space-time interaction depends on the perceptual acuity of the modality used to perceive space.
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Affiliation(s)
- Zhenguang G Cai
- Department of Experimental Psychology, University College London, United Kingdom; School of Psychology, University of Plymouth, United Kingdom; School of Psychological Sciences, University of Manchester, United Kingdom.
| | - Louise Connell
- Department of Psychology, Lancaster University, United Kingdom; School of Psychological Sciences, University of Manchester, United Kingdom.
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El Haj M, Omigie D, Moroni C. Time reproduction during high and low attentional tasks in Alzheimer’s Disease “A watched kettle never boils”. Brain Cogn 2014; 88:1-5. [DOI: 10.1016/j.bandc.2014.04.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 04/03/2014] [Accepted: 04/09/2014] [Indexed: 10/25/2022]
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Magnani B, Frassinetti F, Ditye T, Oliveri M, Costantini M, Walsh V. Left insular cortex and left SFG underlie prismatic adaptation effects on time perception: Evidence from fMRI. Neuroimage 2014; 92:340-8. [DOI: 10.1016/j.neuroimage.2014.01.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 12/14/2013] [Accepted: 01/19/2014] [Indexed: 10/25/2022] Open
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Cappelletti M, Chamberlain R, Freeman ED, Kanai R, Butterworth B, Price CJ, Rees G. Commonalities for Numerical and Continuous Quantity Skills at Temporo-parietal Junction. J Cogn Neurosci 2014; 26:986-99. [PMID: 24345167 DOI: 10.1162/jocn_a_00546] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Abstract
How do our abilities to process number and other continuous quantities such as time and space relate to each other? Recent evidence suggests that these abilities share common magnitude processing and neural resources, although other findings also highlight the role of dimension-specific processes. To further characterize the relation between number, time, and space, we first examined them in a population with a developmental numerical dysfunction (developmental dyscalculia) and then assessed the extent to which these abilities correlated both behaviorally and anatomically in numerically normal participants. We found that (1) participants with dyscalculia showed preserved continuous quantity processing and (2) in numerically normal adults, numerical and continuous quantity abilities were at least partially dissociated both behaviorally and anatomically. Specifically, gray matter volume correlated with both measures of numerical and continuous quantity processing in the right TPJ; in contrast, individual differences in number proficiency were associated with gray matter volume in number-specific cortical regions in the right parietal lobe. Together, our new converging evidence of selective numerical impairment and of number-specific brain areas at least partially distinct from common magnitude areas suggests that the human brain is equipped with different ways of quantifying the outside world.
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Stöttinger E, Filipowicz A, Marandi E, Quehl N, Danckert J, Anderson B. Statistical and perceptual updating: correlated impairments in right brain injury. Exp Brain Res 2014; 232:1971-87. [DOI: 10.1007/s00221-014-3887-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 02/18/2014] [Indexed: 10/25/2022]
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Piras F, Piras F, Ciullo V, Danese E, Caltagirone C, Spalletta G. Time dysperception perspective for acquired brain injury. Front Neurol 2014; 4:217. [PMID: 24454304 PMCID: PMC3888944 DOI: 10.3389/fneur.2013.00217] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 12/27/2013] [Indexed: 12/26/2022] Open
Abstract
Distortions of time perception are presented by a number of neuropsychiatric illnesses. Here we survey timing abilities in clinical populations with focal lesions in key brain structures recently implicated in human studies of timing. We also review timing performance in amnesic and traumatic brain injured patients in order to identify the nature of specific timing disorders in different brain damaged populations. We purposely analyzed the complex relationship between both cognitive and contextual factors involved in time estimation, as to characterize the correlation between timed and other cognitive behaviors in each group. We assume that interval timing is a solid construct to study cognitive dysfunctions following brain injury, as timing performance is a sensitive metric of information processing, while temporal cognition has the potential of influencing a wide range of cognitive processes. Moreover, temporal performance is a sensitive assay of damage to the underlying neural substrate after a brain insult. Further research in neurological and psychiatric patients will clarify whether time distortions are a manifestation of, or a mechanism for, cognitive and behavioral symptoms of neuropsychiatric disorders.
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Affiliation(s)
- Federica Piras
- Neuropsychiatry Laboratory, Department of Clinical and Behavioral Neurology, IRCCS Santa Lucia Foundation , Rome , Italy
| | - Fabrizio Piras
- Neuropsychiatry Laboratory, Department of Clinical and Behavioral Neurology, IRCCS Santa Lucia Foundation , Rome , Italy
| | - Valentina Ciullo
- Neuropsychiatry Laboratory, Department of Clinical and Behavioral Neurology, IRCCS Santa Lucia Foundation , Rome , Italy
| | - Emanuela Danese
- NESMOS Department, University "Sapienza," Second Faculty of Medicine at Sant'Andrea Hospital , Rome , Italy
| | - Carlo Caltagirone
- Neuropsychiatry Laboratory, Department of Clinical and Behavioral Neurology, IRCCS Santa Lucia Foundation , Rome , Italy
| | - Gianfranco Spalletta
- Neuropsychiatry Laboratory, Department of Clinical and Behavioral Neurology, IRCCS Santa Lucia Foundation , Rome , Italy
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Allman MJ, Teki S, Griffiths TD, Meck WH. Properties of the Internal Clock: First- and Second-Order Principles of Subjective Time. Annu Rev Psychol 2014; 65:743-71. [DOI: 10.1146/annurev-psych-010213-115117] [Citation(s) in RCA: 231] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Melissa J. Allman
- Department of Psychology, Michigan State University, East Lansing, Michigan 48823;
| | - Sundeep Teki
- Wellcome Trust Center for Neuroimaging, University College London, London, WC1N 3BG United Kingdom;
| | - Timothy D. Griffiths
- Wellcome Trust Center for Neuroimaging, University College London, London, WC1N 3BG United Kingdom;
- Institute of Neuroscience, The Medical School, Newcastle University, Newcastle-upon-Tyne, NE2 4HH United Kingdom;
| | - Warren H. Meck
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina 27701;
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40
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From Duration and Distance Comparisons to Goal Encoding in Prefrontal Cortex. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 829:167-86. [DOI: 10.1007/978-1-4939-1782-2_10] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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41
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Berkovich-Ohana A, Dor-Ziderman Y, Glicksohn J, Goldstein A. Alterations in the sense of time, space, and body in the mindfulness-trained brain: a neurophenomenologically-guided MEG study. Front Psychol 2013; 4:912. [PMID: 24348455 PMCID: PMC3847819 DOI: 10.3389/fpsyg.2013.00912] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 11/16/2013] [Indexed: 12/20/2022] Open
Abstract
Meditation practice can lead to what have been referred to as “altered states of consciousness.”One of the phenomenological characteristics of these states is a joint alteration in the sense of time, space, and body. Here, we set out to study the unique experiences of alteration in the sense of time and space by collaborating with a select group of 12 long-term mindfulness meditation (MM) practitioners in a neurophenomenological setup, utilizing first-person data to guide the neural analyses. We hypothesized that the underlying neural activity accompanying alterations in the sense of time and space would be related to alterations in bodily processing. The participants were asked to volitionally bring about distinct states of “Timelessness” (outside time) and “Spacelessness” (outside space) while their brain activity was recorded by MEG. In order to rule out the involvement of attention, memory, or imagination, we used control states of “Then” (past) and “There” (another place). MEG sensors evidencing alterations in power values were identified, and the brain regions underlying these changes were estimated via spatial filtering (beamforming). Particularly, we searched for similar neural activity hypothesized to underlie both the state of “Timelessness” and “Spacelessness.” The results were mostly confined to the theta band, and showed that: (1) the “Then”/“There” overlap yielded activity in regions related to autobiographic memory and imagery (right posterior parietal lobule (PPL), right precentral/middle frontal gyrus (MFG), bilateral precuneus); (2) “Timelessness”/“Spacelessness” conditions overlapped in a different network, related to alterations in the sense of the body (posterior cingulate, right temporoparietal junction (TPJ), cerebellum); and (3) phenomenologically-guided neural analyses enabled us to dissociate different levels of alterations in the sense of the body. This study illustrates the utility of employing experienced contemplative practitioners within a neurophenomenological setup for scientifically characterizing a self-induced altered sense of time, space and body, as well as the importance of theta activity in relation with these altered states.
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Affiliation(s)
| | - Yair Dor-Ziderman
- The Leslie and Susan Gonda (Goldschmied) Multidisciplinary Brain Research Center, Bar-Ilan University Ramat Gan, Israel
| | - Joseph Glicksohn
- The Leslie and Susan Gonda (Goldschmied) Multidisciplinary Brain Research Center, Bar-Ilan University Ramat Gan, Israel ; Department of Criminology, Bar-Ilan University Ramat Gan, Israel
| | - Abraham Goldstein
- The Leslie and Susan Gonda (Goldschmied) Multidisciplinary Brain Research Center, Bar-Ilan University Ramat Gan, Israel ; Department of Psychology, Bar-Ilan University Ramat Gan, Israel
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42
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Shaqiri A, Anderson B. Priming and statistical learning in right brain damaged patients. Neuropsychologia 2013; 51:2526-33. [PMID: 24075841 DOI: 10.1016/j.neuropsychologia.2013.09.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 09/12/2013] [Accepted: 09/14/2013] [Indexed: 10/26/2022]
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Striemer CL, Ferber S, Danckert J. Spatial working memory deficits represent a core challenge for rehabilitating neglect. Front Hum Neurosci 2013; 7:334. [PMID: 23818880 PMCID: PMC3694262 DOI: 10.3389/fnhum.2013.00334] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 06/14/2013] [Indexed: 11/26/2022] Open
Abstract
Left neglect following right hemisphere injury is a debilitating disorder that has proven extremely difficult to rehabilitate. Traditional models of neglect have focused on impaired spatial attention as the core deficit and as such, most rehabilitation methods have tried to improve attentional processes. However, many of these techniques (e.g., visual scanning training, caloric stimulation, neck muscle vibration) produce only short-lived effects, or are too uncomfortable to use as a routine treatment. More recently, many investigators have begun examining the beneficial effects of prism adaptation for the treatment of neglect. Although prism adaptation has been shown to have some beneficial effects on both overt and covert spatial attention, it does not reliably alter many of the perceptual biases evident in neglect. One of the challenges of neglect rehabilitation may lie in the heterogeneous nature of the deficits. Most notably, a number of researchers have shown that neglect patients present with severe deficits in spatial working memory (SWM) in addition to their attentional impairments. Given that SWM can be seen as a foundational cognitive mechanism, critical for a wide range of other functions, any deficit in SWM memory will undoubtedly have severe consequences. In the current review we examine the evidence for SWM deficits in neglect and propose that it constitutes a core component of the syndrome. We present preliminary data which suggest that at least one current rehabilitation method (prism adaptation) has no effect on SWM deficits in neglect. Finally, we end by reviewing recent work that examines the effectiveness of SWM training and how SWM training may prove to be a useful avenue for future rehabilitative efforts in patients with neglect.
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Shaqiri A, Anderson B, Danckert J. Statistical learning as a tool for rehabilitation in spatial neglect. Front Hum Neurosci 2013; 7:224. [PMID: 23754998 PMCID: PMC3665923 DOI: 10.3389/fnhum.2013.00224] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 05/09/2013] [Indexed: 11/13/2022] Open
Abstract
We propose that neglect includes a disorder of representational updating. Representational updating refers to our ability to build mental models and adapt those models to changing experience. This updating ability depends on the processes of priming, working memory, and statistical learning. These processes in turn interact with our capabilities for sustained attention and precise temporal processing. We review evidence showing that all these non-spatial abilities are impaired in neglect, and we discuss how recognition of such deficits can lead to novel approaches for rehabilitating neglect.
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Affiliation(s)
- Albulena Shaqiri
- Department of Psychology, Cognitive Neuroscience, University of Waterloo, Waterloo, ON, Canada
| | - Britt Anderson
- Department of Psychology, Cognitive Neuroscience, University of Waterloo, Waterloo, ON, Canada
- Center for Theoretical Neuroscience, University of Waterloo, Waterloo, ON, Canada
| | - James Danckert
- Department of Psychology, Cognitive Neuroscience, University of Waterloo, Waterloo, ON, Canada
- Center for Theoretical Neuroscience, University of Waterloo, Waterloo, ON, Canada
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45
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Ptak R, Fellrath J. Spatial neglect and the neural coding of attentional priority. Neurosci Biobehav Rev 2013; 37:705-22. [DOI: 10.1016/j.neubiorev.2013.01.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Revised: 12/11/2012] [Accepted: 01/28/2013] [Indexed: 11/27/2022]
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46
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Oliveri M, Magnani B, Filipelli A, Avanzi S, Frassinetti F. Prismatic adaptation effects on spatial representation of time in neglect patients. Cortex 2013; 49:120-30. [DOI: 10.1016/j.cortex.2011.11.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 09/28/2011] [Accepted: 11/10/2011] [Indexed: 10/15/2022]
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47
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Van Vleet TM, DeGutis JM. The nonspatial side of spatial neglect and related approaches to treatment. PROGRESS IN BRAIN RESEARCH 2013; 207:327-49. [PMID: 24309261 DOI: 10.1016/b978-0-444-63327-9.00012-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
In addition to deficits in spatial attention, individuals with persistent spatial neglect almost universally exhibit nonspatially lateralized deficits in sustained and selective attention, and working memory. However, nonspatially lateralized deficits in neglect have received considerably less attention in the literature than deficits in spatial attention. This is in spite of the fact that nonspatially lateralized deficits better predict the chronicity and functional disability associated with neglect than spatially lateralized deficits. Furthermore, only a few treatment studies have specifically targeted nonspatially lateralized deficits as a means to improve spatial neglect. In this chapter, we will briefly review several models of spatial attention bias in neglect before focusing on nonspatial deficits and the mechanisms of nonspatial-spatial interactions and implications for treatment. Treatment approaches that more completely address nonspatial deficits and better account for their interactions with spatial attention will likely produce better outcomes.
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Affiliation(s)
- Thomas M Van Vleet
- Department of Veteran Affairs, Martinez, CA, USA; Brain Plasticity Institute at Posit Science Corporation, San Francisco, CA, USA.
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48
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Bonato M, Zorzi M, Umiltà C. When time is space: evidence for a mental time line. Neurosci Biobehav Rev 2012; 36:2257-73. [PMID: 22935777 DOI: 10.1016/j.neubiorev.2012.08.007] [Citation(s) in RCA: 208] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Revised: 07/20/2012] [Accepted: 08/15/2012] [Indexed: 11/29/2022]
Abstract
Time and space are tightly linked in the physical word. Recently, several lines of evidence have suggested that the mental representation of time might be spatial in nature. For instance, time-space interactions have been described as a strong preference to associate the past with the left space and the future with the right space. Here we review the growing evidence of interactions between time and space processing, systematized according to the type of interaction being investigated. We present the empirical findings supporting the possibility that humans represent the subjective time flow on a spatially oriented "mental time line" that is accessed through spatial attention mechanisms. The heterogeneous time-space interactions are then compared with the number-space interactions described in the numerical cognition literature. An alternative hypothesis, which maintains a common system for magnitude processing, including time, space, and number, is also discussed. Finally, we extend the discussion to the more general issue of how the representation of these concepts might be grounded into the cortical circuits that support spatial attention and sensorimotor transformations.
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Affiliation(s)
- Mario Bonato
- Department of General Psychology and Center for Cognitive Science, University of Padova, Padova, Italy.
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49
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Fellrath J, Blanche-Durbec V, Schnider A, Jacquemoud AS, Ptak R. Visual search in spatial neglect studied with a preview paradigm. Front Hum Neurosci 2012; 6:93. [PMID: 22529795 PMCID: PMC3328796 DOI: 10.3389/fnhum.2012.00093] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 03/31/2012] [Indexed: 11/13/2022] Open
Abstract
Impaired visual search is a hallmark of spatial neglect. When searching for an unique feature (e.g., color) neglect patients often show only slight visual field asymmetries. In contrast, when the target is defined by a combination of features (e.g., color and form) they exhibit a severe deficit of contralesional search. This finding suggests a selective impairment of the serial deployment of spatial attention. Here, we examined this deficit with a preview paradigm. Neglect patients searched for a target defined by the conjunction of shape and color, presented together with varying numbers of distracters. The presentation time was varied such that on some trials participants previewed the target together with same-shape/different-color distracters, for 300 or 600 ms prior to the appearance of additional different-shape/same-color distracters. On the remaining trials the target and all distracters were shown simultaneously. Healthy participants exhibited a serial search strategy only when all items were presented simultaneously, whereas in both preview conditions a pop-out effect was observed. Neglect patients showed a similar pattern when the target was presented in the right hemifield. In contrast, when searching for a target in the left hemifield they showed serial search in the no-preview condition, as well as with a preview of 300 ms, and partly even at 600 ms. A control experiment suggested that the failure to fully benefit from item preview was probably independent of accurate perception of time. Our results, when viewed in the context of existing literature, lead us to conclude that the visual search deficit in neglect reflects two additive factors: a biased representation of attentional priority in favor of ipsilesional information and exaggerated capture of attention by ipsilesional abrupt onsets.
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Affiliation(s)
- Julia Fellrath
- Division of Neurorehabilitation, University Hospitals Geneva Geneva, Switzerland
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50
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Barrett DJK, Edmondson-Jones AM, Hall DA. Attention in neglect and extinction: assessing the degree of correspondence between visual and auditory impairments using matched tasks. J Clin Exp Neuropsychol 2012; 32:71-80. [PMID: 19484647 PMCID: PMC2700719 DOI: 10.1080/13803390902838058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Claims have been made for associated degrees of impairment on both visual and auditory performance in unilateral neglect and extinction. Since this evidence is primarily based on different tests in each modality, it is difficult to properly quantify the degree of association between performance in vision and audition. The current study compares visual and auditory extinction and temporal order judgments (TOJs) in two cases with clinical visual neglect. Stimuli in both modalities were precisely matched in their temporal and spatial parameters. The results reveal a mixed pattern of association between different auditory tests and their visual counterparts. This suggests that associations between visual and auditory neglect can occur but these are neither obligatory nor pervasive. Instead, our data support models of spatial impairment in neglect and extinction that acknowledge differences in the contribution of spatial information to performance in each modality in responses to changing task demands.
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Affiliation(s)
- Doug J K Barrett
- The Division of Psychology, Nottingham Trent University, Nottingham, UK.
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