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Behavioral analysis of the hippocampal syndrome. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00063974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Hippocampal lesions and Intermittent reinforcement. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00064098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
AbstractTheories of spatial cognition are derived from many sources. Psychologists are concerned with determining the features of the mind which, in combination with external inputs, produce our spatialized experience. A review of philosophical and other approaches has convinced us that the brain must come equipped to impose a three-dimensional Euclidean framework on experience – our analysis suggests that object re-identification may require such a framework. We identify this absolute, nonegocentric, spatial framework with a specific neural system centered in the hippocampus.A consideration of the kinds of behaviours in which such a spatial mapping system would be important is followed by an analysis of the anatomy and physiology of this system, with special emphasis on the place-coded neurons recorded in the hippocampus of freely moving rats. A tentative physiological model for the hippocampal cognitive map is proposed. A review of lesion studies, in tasks as diverse as discrimination learning, avoidance, and extinction, shows that the cognitive map notion can adequately explain much of the data.The model is extended to humans by the assumption that spatial maps are built in one hemisphere, semantic maps in the other. The latter provide a semantic deep structure within which discourse comprehension and production can be achieved. Evidence from the study of amnesic patients, briefly reviewed, is consistent with this extension.
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On panspatial theories of brain and behavior. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00064049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hippocampal function: logic, logic, and more logic. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00064062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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The hippocampus and informational salience. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x0006413x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Time: a fourth dimension for the hippocampal cognitive map. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00064141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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On the nature of cognitive maps. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00064013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Selective activation of hippocampal neurons. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00063962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Cánovas R, García RF, Cimadevilla JM. Effect of reference frames and number of cues available on the spatial orientation of males and females in a virtual memory task. Behav Brain Res 2011; 216:116-21. [DOI: 10.1016/j.bbr.2010.07.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 07/14/2010] [Accepted: 07/16/2010] [Indexed: 10/19/2022]
Affiliation(s)
- Rosa Cánovas
- Department of Neuroscience, University of Almería, Carretera de Sacramento s/n, 04120, Almería, Spain
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Parron C, Poucet B, Save E. Entorhinal cortex lesions impair the use of distal but not proximal landmarks during place navigation in the rat. Behav Brain Res 2004; 154:345-52. [PMID: 15313022 DOI: 10.1016/j.bbr.2004.03.006] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2003] [Revised: 03/02/2004] [Accepted: 03/04/2004] [Indexed: 11/20/2022]
Abstract
Rats with entorhinal cortex lesions were trained in two versions of the place navigation task in the Morris water maze. In the distal condition, they had to locate the hidden platform on the basis of remote landmarks, while in the proximal condition, they had to rely only on a configuration of proximal objects, placed directly in the pool. Entorhinal rats were impaired in using distal landmarks but were able to use proximal landmarks to navigate toward the platform. These results suggest that the use of distal and proximal landmarks during navigation involves activation of different neural structures. They also suggest, in agreement with previous data, that there are two distinct landmark-processing systems, one devoted to the processing of proximal landmarks and the other to the processing of distal landmarks.
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Affiliation(s)
- Carole Parron
- Laboratory of Neurobiology and Cognition UMR 6155, CNRS-University of Aix-Marseille I, 31 Chemin Joseph-Aiguier, 13402 Marseille, Cedex 20, France
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Béracochéa D, Cagnard B, Célérier A, le Merrer J, Pérès M, Piérard C. First evidence of a delay-dependent working memory-enhancing effect of modafinil in mice. Neuroreport 2001; 12:375-8. [PMID: 11209953 DOI: 10.1097/00001756-200102120-00038] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This study investigated the effects of pretest injection of modafinil on delayed spontaneous alternation rates (SA) used to evaluate working memory in C57 Bl/6 mice. In a first experiment, systemic modafinil at 64 mg/kg, but not at 8 mg/kg or 32 mg/kg doses produced a significant increase of alternation scores (intertrial interval (ITI) 60s) when compared with controls. In a second experiment, modafinil (64 mg/kg) enhanced the alternation rates mainly at long (60 s and 180 s) but not at short (5 s) ITIs. Exploratory latencies and activity in a four hole-board apparatus were not modified by modafinil administration. These experiments are the first to demonstrate a delay-dependent working memory-enhancing effect of modafinil.
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Affiliation(s)
- D Béracochéa
- Laboratoire de Neurosciences Cognitives, Université de Bordeaux I, UMR CNRS 5601, Talence, France
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Béracochéa DJ, Jaffard R. The effects of mammillary body lesions on delayed matching and delayed non-matching to place tasks in the mice. Behav Brain Res 1995; 68:45-52. [PMID: 7619304 DOI: 10.1016/0166-4328(94)00158-c] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This study was designed to investigate the effects of different recognition procedures on memory performance in Balb/c mice. To this end, mice were submitted to spontaneous or contingently reinforced delayed non-matching (DNMTP) and delayed matching (DMTP) to place tasks in a T-maze. Results indicate that mammillary bodies (MM)-lesioned subjects are significantly impaired in the DNMTP tasks at the long (6 h) but not the short (5 min) delays; in contrast, they did not exhibit deficits in the DMTP task, whatever the delay considered. We stress the importance of task difficulty as a major factor explaining the different effects of the lesion in the two tasks.
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Affiliation(s)
- D J Béracochéa
- Laboratoire de Neurosciences Cognitives et Comportementales, URA CNRS 339, Université de Bordeaux I, Talence, France
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Horner MD. Psychobiological evidence for the distinction between episodic and semantic memory. Neuropsychol Rev 1990; 1:281-321. [PMID: 1983802 DOI: 10.1007/bf01109027] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The evidence for discrete neurobiological mechanisms that underlie episodic and semantic memory is reviewed. Published data from three separate lines of research are considered: studies of human amnesic patients, psychopharmacological studies of normal human subjects, and studies of working and reference memory in rodents, a distinction that is arguably analogous to the episodic/semantic dichotomy. It is concluded that the available evidence does not indicate that episodic and semantic memory are mediated by discrete neural subsystems. An alternative model of human memory is discussed, based on the concept of parallel distributed processing.
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Affiliation(s)
- M D Horner
- Department of Psychology, Emory University, Atlanta, Georgia 30322
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The hippocampus and its apparent migration to the parietal lobe. Behav Brain Sci 1979. [DOI: 10.1017/s0140525x00064001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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On O'Keefe, Nadel, space and brain. Behav Brain Sci 1979. [DOI: 10.1017/s0140525x00064177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Lost maps and memories. Behav Brain Sci 1979. [DOI: 10.1017/s0140525x00064086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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The anatomy of a cognitive map. Behav Brain Sci 1979. [DOI: 10.1017/s0140525x00064190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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What is a cognitive map? Behav Brain Sci 1979. [DOI: 10.1017/s0140525x00064104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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The “neuroethological revolution” in unit studies. Behav Brain Sci 1979. [DOI: 10.1017/s0140525x00063998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Cognitive maps: dimensionality and development. Behav Brain Sci 1979. [DOI: 10.1017/s0140525x00064244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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O'Keefe & Nadel's three-stage model for hippocampal representation of space. Behav Brain Sci 1979. [DOI: 10.1017/s0140525x00063986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Anatomical units in psychology. Behav Brain Sci 1979. [DOI: 10.1017/s0140525x00064220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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