THE EFFECT OF LIGHT DEPRIVATION ON RAT SPATIAL MEMORY

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SALAMI M.; NOUR ALDINI M.; RASHIDI A.A.; AGHANOURI Z.

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Journal: Physiology and Pharmacology Year:2004 | Volume:8 | Issue:1 Page(s): 83-92

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Title

THE EFFECT OF LIGHT DEPRIVATION ON RAT SPATIAL MEMORY

Author(s)

SALAMI M. | NOUR ALDINI M. | RASHIDI A.A. | AGHANOURI Z. | Issue Writer Certificate

Keywords

WORKING MEMORYQ2

VISUAL CORTEXQ4

RADIAL MAZEQ4

VISUAL DEPRIVATIONQ4

Abstract

Sensory experience during critical period has a profound effect on maturation of visual cortical wiring. The critical period, itself, is affected by the environmental signals and known to be prolonged as a result of sensory deprivation. Electrophysiological evidence is indicating a substantial effect of VISUAL DEPRIVATION on the visual conical response properties. In this study, the effect of light deprivation on short term spatial WORKING MEMORY of rats was evaluated in: 1. the period of life in which the critical period is normally going away, and 2. adult rats. Normal light (LR)- and dark (DR)-reared rats at ages of 40 (P40) and 60 (P60) days were trained in an eight arm RADIAL MAZE. Number of the trials needed for two consecutive successful navigations to reach the criterion, number of the errors within each session and the elapsed steering time were assessed. The P40DR rats revealed an obvious better task performance on all of the trials as compared to their relative LR controls. Also, the results indicated that DR rats rely less on the brightness level in the testing room than do LR ones. In addition, no marked difference was observed between the groups at P60, however, as compared to those at P40, they required fewer trials to attain the criterion and made fewer errors in the navigations but almost the same performances among themselves.It is concluded that on the spatial WORKING MEMORY performance, the dark rearing leaves the VISUAL CORTEX more plastic, confirming the electrophysiological reports that indicate a higher cortical plasticity following the VISUAL DEPRIVATION.

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APA: Copy

SALAMI, M., NOUR ALDINI, M., RASHIDI, A.A., & AGHANOURI, Z.. (2004). THE EFFECT OF LIGHT DEPRIVATION ON RAT SPATIAL MEMORY. PHYSIOLOGY AND PHARMACOLOGY, 8(1), 83-92. SID. https://sid.ir/paper/75279/en

Vancouver: Copy

SALAMI M., NOUR ALDINI M., RASHIDI A.A., AGHANOURI Z.. THE EFFECT OF LIGHT DEPRIVATION ON RAT SPATIAL MEMORY. PHYSIOLOGY AND PHARMACOLOGY[Internet]. 2004;8(1):83-92. Available from: https://sid.ir/paper/75279/en

IEEE: Copy

M. SALAMI, M. NOUR ALDINI, A.A. RASHIDI, and Z. AGHANOURI, “THE EFFECT OF LIGHT DEPRIVATION ON RAT SPATIAL MEMORY,” PHYSIOLOGY AND PHARMACOLOGY, vol. 8, no. 1, pp. 83–92, 2004, [Online]. Available: https://sid.ir/paper/75279/en

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