Hippocampus

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Recollection and familiarity: Examining controversial assumptions and new directions
Hippocampus - Tập 20 Số 11 - Trang 1178-1194 - 2010
Andrew P. Yonelinas, Mariam Aly, Wei‐Chun Wang, Joshua D. Koen
AbstractIt is well accepted that recognition memory reflects the contribution of two separable memory retrieval processes, namely recollection and familiarity. However, fundamental questions remain regarding the functional nature and neural substrates of these processes. In this article, we describe a simple quantitative model of recognition memory (i.e., the dual‐...... hiện toàn bộ
Navigation expertise and the human hippocampus: A structural brain imaging analysis
Hippocampus - Tập 13 Số 2 - Trang 250-259 - 2003
Eleanor A. Maguire, Hugo J. Spiers, Catriona D. Good, Tom T. Hartley, R. S. J. Frackowiak, Neil Burgess
AbstractGrey matter volume in the posterior hippocampus of London taxi drivers is greater than in age‐matched controls, and the size of this increase correlates positively with time spent taxi driving (E.A. Maguire et al., 2000. Proc Natl Acad Sci U S A 97: 4398–4403). This change suggests that increased posterior hippocampal grey matter volume is acquired in respo...... hiện toàn bộ
GABAB receptor blockade enhances theta and gamma rhythms in the hippocampus of behaving rats
Hippocampus - Tập 17 Số 4 - Trang 281-291 - 2007
L. Stan Leung, Bixia Shen
AbstractThe participation of GABAB receptors in hippocampal EEG generation was studied by intracerebroventricular (icv) and intracerebral infusions of GABAB receptor antagonist p‐(3‐aminopropyl)‐p‐diethoxymethyl‐phosphinic acid (CGP35348) in freely behaving rats. During ...... hiện toàn bộ
Simulation of spatial learning in the Morris water maze by a neural network model of the hippocampal formation and nucleus accumbens
Hippocampus - Tập 5 Số 3 - Trang 171-188 - 1995
Michael A. Brown, Patricia E. Sharp
AbstractCells in the hippocampal formation show spatial firing correlates thought to be critical to the role played by this structure in spatial learning. Place cells in the hippocampus proper show location‐specific activity, whereas cells in the postsubiculum fire as a function of momentary directional heading.One question which has received littl...... hiện toàn bộ
Progressive increase in grid scale from dorsal to ventral medial entorhinal cortex
Hippocampus - Tập 18 Số 12 - Trang 1200-1212 - 2008
Vegard Heimly Brun, Trygve Solstad, Kirsten Brun Kjelstrup, Marianne Fyhn, Menno P. Witter, Edvard I Moser, May‐Britt Moser
AbstractGrid cells are topographically organized in the sense that, within the dorsal part of the medial entorhinal cortex, the scale of the grid increases systematically with anatomical distance from the dorsal border of this brain area. The ventral limit of the spatial map is currently not known. To determine if the grid map extends into the intermediate and vent...... hiện toàn bộ
Hippocampal complex and retrieval of recent and very remote autobiographical memories: Evidence from functional magnetic resonance imaging in neurologically intact people
Hippocampus - Tập 11 Số 6 - Trang 707-714 - 2001
Lee Ryan, Lynn Nadel, Katrina Keil, Karen Putnam, David M. Schnyer, Theodore P. Trouard, Morris Moscovitch
AbstractIt has been argued that the role of the hippocampus in memory is time‐limited: during a period of memory consolidation, other brain regions such as the neocortex are said to acquire the ability to support memory retention and retrieval on their own. An alternative view is that retention and retrieval of memory for autobiographical episodes depend on the hip...... hiện toàn bộ
Encoding versus retrieval of spatial memory: Double dissociation between the dentate gyrus and the perforant path inputs into CA3 in the dorsal hippocampus
Hippocampus - Tập 14 Số 1 - Trang 66-76 - 2004
Inah Lee, Raymond P. Kesner
AbstractThe hippocampus is an essential neural structure for spatial memory. Computational models suggest that the CA3 subregion of the hippocampus plays an essential role in encoding and retrieval of spatial memory. The perforant path (PPCA3) and dentate gyrus (DG)‐mediated mossy fibers (MFs) compose major afferent inputs into CA3. A possible functional dissociati...... hiện toàn bộ
Dual phase and rate coding in hippocampal place cells: Theoretical significance and relationship to entorhinal grid cells
Hippocampus - Tập 15 Số 7 - Trang 853-866 - 2005
John O’Keefe, Neil Burgess
AbstractWe review the ideas and data behind the hypothesis that hippocampal pyramidal cells encode information by their phase of firing relative to the theta rhythm of the EEG. Particular focus is given to the further hypothesis that variations in firing rate can encode information independently from that encoded by firing phase. We discuss possible explanation of ...... hiện toàn bộ
Infusion of neuropeptide Y into CA3 region of hippocampus produces antidepressant‐like effect via Y1 receptor
Hippocampus - Tập 17 Số 4 - Trang 271-280 - 2007
Hisahito Ishida, Yukihiko Shirayama, Masaaki Iwata, Seiji Katayama, Ayaka Yamamoto, R Kawahara, Kazuyuki Nakagome
AbstractA couple of papers indicate that patients with depression show a decrease in serum neuropeptide Y (NPY). To study the role of NPY in depression, we examined the effects of infusion of NPY into the hippocampus of learned helplessness (LH) rats (an animal model of depression). Infusion of NPY into the cerebral ventricle of LH rats showed antidepressant‐like e...... hiện toàn bộ
Brain‐derived neurotrophic factor interacts with adult‐born immature cells in the dentate gyrus during consolidation of overlapping memories
Hippocampus - Tập 24 Số 8 - Trang 905-911 - 2014
Pedro Bekinschtein, Brianne A. Kent, Charlotte A. Oomen, Gregory D. Clemenson, Fred H. Gage, Lisa M. Saksida, Timothy J. Bussey
Tổng số: 95   
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