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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Jang, Yoonhee Goldinger, Stephen D. Smith, Kris A. Steinmetz, Peter N. Wixted, John T. Kuhn, Joel R. Treiman, David M. Papesh, Megan H. Squire, Larry R. |
| Description | Author Affiliation: Wixted JT ( Departments of Psychology, jwixted@ucsd.edu lsquire@ucsd.edu.); Squire LR ( Departments of Psychology,Psychiatry, andNeurosciences, University of California, San Diego, La Jolla, CA 92093); Jang Y ( Department of Psychology, University of Montana, Missoula, MT 59812); Papesh MH ( Department of Psychology, Louisiana State University, Baton Rouge, LA 70803); Goldinger SD ( Department of Psychology, Arizona State University, Tempe, AZ 85287); Kuhn JR ( Departments of Psychology.); Smith KA ( Departments of Neurosurgery and.); Treiman DM ( Neurology, Barrow Neurological Institute, Phoenix, AZ 85013.); Steinmetz PN ( Departments of Neurosurgery andNeurology, Barrow Neurological Institute, Phoenix, AZ 85013.); |
| Abstract | Neurocomputational models hold that sparse distributed coding is the most efficient way for hippocampal neurons to encode episodic memories rapidly. We investigated the representation of episodic memory in hippocampal neurons of nine epilepsy patients undergoing intracranial monitoring as they discriminated between recently studied words (targets) and new words (foils) on a recognition test. On average, single units and multiunits exhibited higher spike counts in response to targets relative to foils, and the size of this effect correlated with behavioral performance. Further analyses of the spike-count distributions revealed that (i) a small percentage of recorded neurons responded to any one target and (ii) a small percentage of targets elicited a strong response in any one neuron. These findings are consistent with the idea that in the human hippocampus episodic memory is supported by a sparse distributed neural code. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 26 |
| Volume Number | 111 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2014-07-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Epilepsy Physiopathology Hippocampus Physiology Memory, Episodic Models, Neurological Neurophysiological Monitoring Neuropsychological Tests Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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