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Volume 21 (2003)
- Issue 3 Pages 205-
- Issue 2 Pages 61-
- Issue 1 Pages 1-
Volume 21, Issue 1
Displaying 1-6 of 6 articles from this issue
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Hiroshige OKAICHI2003 Volume 21 Issue 1 Pages 1-3
Published: April 30, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSDownload PDF (374K) -
Yukio ICHITANI, Toru YOSHIHARA, Kazuko HAYASHI2003 Volume 21 Issue 1 Pages 5-17
Published: April 30, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSThe first part of this study explains Morris water maze and radial arm maze tasks which are typically used to measure spatial cognition and memory in rats and mice. The next part explains the long-term potentiation (LTP) as the neural base of learning and memory, and the classification of glutamate receptors. The third part reviews behavioral pharmacological studies on the role of brain NMDA receptors and metabotropic glutamate receptors in spatial memory. Recent development of molecular biological studies using gene-manipulated mice is also reviewed. (Japanese Journal of Physiological Psychology and Psychophysiology, 21 (1) : 5-17, 2003.)View full abstractDownload PDF (1903K) -
Kozo SUGIOKA, Tomiyoshi SETSU, Toshio TERASHIMA2003 Volume 21 Issue 1 Pages 19-30
Published: April 30, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSWe reviewed, 1) the concept of the spatial cognition and the brain areas resposible to the spatial cognition from a human neuropsychological viewpoint, 2) the role of the hippocampus on the spatial cognition processing in animals and the two major hypotheses concerned to hippocampal function in various spatial cognition tasks : cognitive map hypothesis and working memory hypothesis, and 3) our recent studies which showed the spatial cognition impairment in the experimentally-induced microencephalic rats with abnormal morpho-and/or neuro-genesis of the hippocampus by prenatal methylazoxymethanol (MAM) injection. The spatial cognition impairment observed in our experiments was very similar to that observed in rats with surgical lesions of the hippocampus. Combined our behavioral results with brain histological examinations, it is considered that the spatial cognition impairment observed in prenatal MAM-treated rats was due more to the effects of MAM on the hippocampus than to its effects on the cerebral cortex. (Japanese Journal of Physiological Psychology and Psychophysiology, 21 (1) : 19-30, 2003.)View full abstractDownload PDF (1792K) -
Shigeru WATANABE2003 Volume 21 Issue 1 Pages 31-38
Published: April 30, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSSpatial cognition is one of the basic cognitive functions of animals and broadly spreads in animal kingdom. The dorsomedial part of caudal telencephalon of bird is homologue of mammalian hippocampus. Both allometric and lesion studies suggest spatial memory function of the avian hippocampus. Lesions in the dorsal telencephalon of fish cause deficits in spatial memory, however, hippocampus of fish has not yet been identified. In comparison with mammals, the avian hippocampal function seems to specialized to spatial one. Difference in hippocampal functions may suggest divergent functions of the homologous structure of brains. (Japanese Journal of Physiological Psychology and Psychophysiology;, 21 (1) : 31-38, 2003.)View full abstractDownload PDF (1029K) -
Shogo SAKATA2003 Volume 21 Issue 1 Pages 39-48
Published: April 30, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSTiming intervals on the scale of many hours to around a day are mediated by the circadian rhythm system, while in the range of seconds to minutes a different system, known as time perception, is used. Time perception is described as the processes involved in the discrimination and reproduction of relatively short intervals in the seconds to minutes range. In this paper, some explanations are provided on the three study methods of temporal discrimination in animals, which are differential reinforcement of long latencies (DRLL); interval bisection task; and peak interval (PI) procedure. In addition, the behavioral property of the interval timing is also explained by scalar property. Recently, research has illuminated some of the behavioral and neural mechanisms underlying “internal clocks” of the short interval timing and the circadian timing systems. This paper discusses the theoretical information-processing model of interval timing, and attempts to identify the brain region by utilizing electroencephalography data. (Japanese Journal of Physiological Psychology and Psychophysiology, 21 (1) : 39-48, 2003.)View full abstractDownload PDF (1397K) -
Toshimichi HATA2003 Volume 21 Issue 1 Pages 49-58
Published: April 30, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSThis paper is intended as an overview of recent studies which examine the role of the cholinergic (ACh) or the dopaminergic (DA) system in time perception by animals, especially, rats. An information processing model which includes an internal clock, a reference memory, and a decision process was proposed as a substrate of time perception, and it has been revealed which neural transmitter systems involves in these three functions. For example, many studies by Meck and his colleagues have suggested that ACh involves in reference memory, and DA (especially D2 subtype) involves in clock. Later studies, however, do not necessarily support these results. For example, some researches reported that suppression of ACh induced increase in threshold in information processing model, and D2 is not unique dopaminergic subtype involving in clock. After reviewing these results, some issues to be considered in future studies will be pointed out. (Japanese Journal of Physiological Psychology and Psychophysiology, 21 (1) : 49-58, 2003.)View full abstractDownload PDF (1195K)
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