On the contrast response function of adapted neural populations

被引：1

作者：

Tring, Elaine ^{[2
]}

Dipoppa, Mario ^{[2
]}

Ringach, Dario L. ^{[1
,2
]}

机构：

[1] Univ Calif Los Angeles, David Geffen Sch Med, Dept Psychol, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, David Geffen Sch Med, Dept Neurobiol, Los Angeles, CA 90095 USA

来源：

JOURNAL OF NEUROPHYSIOLOGY | 2024年 / 131卷 / 02期

关键词：

contrast response; mouse; population coding; power law; primary visual cortex; PRIMARY VISUAL-CORTEX; PATTERN ADAPTATION; SIMPLE CELLS; POWER-LAW; NORMALIZATION; NEURONS; CAT; INTEGRATION; STATISTICS; MAGNITUDE;

D O I：

10.1152/jn.00413.2023

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

The magnitude of neural responses in sensory cortex depends on the intensity of a stimulus and its probability of being observed within the environment. How these two variables combine to influence the overall response of cortical populations remains unknown. Here we show that, in primary visual cortex, the vector magnitude of the population response is described by a separable power law that factors the intensity of a stimulus and its probability. Moreover, the discriminability between two contrast levels in a cortical population is proportional to the logarithm of the contrast ratio. NEW & NOTEWORTHY The magnitude of neural responses in sensory cortex depends on the intensity of a stimulus and its probability of being observed within the environment. The authors show that, in primary visual cortex, the vector magnitude of the population response is described by a separable power law that factors the intensity of a stimulus and its probability.

引用

页码：446 / 453

页数：8

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