دورية أكاديمية
أعرض في EDS

The human hippocampus beyond the cognitive map: evidence from a densely amnesic patient.

التفاصيل البيبلوغرافية
العنوان: The human hippocampus beyond the cognitive map: evidence from a densely amnesic patient.
المؤلفون: Banta Lavenex PA; Laboratory for Experimental Research on Behavior, Institute of Psychology, University of Lausanne Lausanne, Switzerland., Colombo F; Unit of Neuropsychology and Aphasiology, Cantonal Hospital of Fribourg Fribourg, Switzerland., Ribordy Lambert F; Laboratory of Brain and Cognitive Development, Department of Medicine and Fribourg Center for Cognition, University of Fribourg Fribourg, Switzerland., Lavenex P; Laboratory for Experimental Research on Behavior, Institute of Psychology, University of Lausanne Lausanne, Switzerland ; Laboratory of Brain and Cognitive Development, Department of Medicine and Fribourg Center for Cognition, University of Fribourg Fribourg, Switzerland.
المصدر: Frontiers in human neuroscience [Front Hum Neurosci] 2014 Sep 15; Vol. 8, pp. 711. Date of Electronic Publication: 2014 Sep 15 (Print Publication: 2014).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Frontiers Research Foundation Country of Publication: Switzerland NLM ID: 101477954 Publication Model: eCollection Cited Medium: Print ISSN: 1662-5161 (Print) Linking ISSN: 16625161 NLM ISO Abbreviation: Front Hum Neurosci Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Lausanne, Switzerland : Frontiers Research Foundation, 2008-
مستخلص: We tested a densely amnesic patient (P9), with bilateral hippocampal damage resulting from an autoimmune disorder, and 12 age- and sex-matched controls on a series of memory tasks designed to characterize allocentric spatial learning and memory abilities. We compared P9's ability to perform spatial memory tasks with her ability to perform non-spatial, color memory tasks. First, P9's performance was impaired as compared to controls even in the simplest versions of an allocentric spatial memory task, in which she had to find repeatedly over 10 trials the same location(s) of one, two or three illuminating foot pad(s) among 23 pads distributed in an open-field arena. In contrast, she performed as well as controls when she had to find repeatedly over 10 trials the same one, two or three pad(s) marked by color cue(s), whose locations varied between trials. Second, P9's performance was severely impaired in working memory tasks, when she had to learn on a trial-unique basis and remember the location(s) or the color(s) of one, two or three pad(s), while performing an interfering task during the 1-min interval separating encoding and retrieval. Without interference during the retention interval of the trial-unique tasks, P9's performance was partially preserved in the color tasks, whereas it remained severely impaired in the allocentric spatial tasks. Detailed behavioral analyses indicate that P9's memory representations are more limited than those of controls both in their precision (metric coding) and in the number of items that can be maintained in memory (capacity). These findings are consistent with the theory that the hippocampus contributes to the integration or binding of multiple items, in order to produce high-resolution/high-capacity representations of spatial and non-spatial information in the service of short-term/working and long-term memory.
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فهرسة مساهمة: Keywords: amnesia; declarative memory; interference; medial temporal lobe; memory capacity; parahippocampal; spatial memory
تواريخ الأحداث: Date Created: 20141014 Date Completed: 20141013 Latest Revision: 20211021
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC4164002
DOI: 10.3389/fnhum.2014.00711
PMID: 25309387
قاعدة البيانات: MEDLINE
الوصف
تدمد:1662-5161
DOI:10.3389/fnhum.2014.00711