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eNeuro. 2018 Jul 17;5(4). pii: ENEURO.0414-17.2018. doi: 10.1523/ENEURO.0414-17.2018. eCollection 2018 Jul-Aug.

Organization of Neural Population Code in Mouse Visual System.

Author information

1
Ward Melville High School, East Setauket, NY.
2
Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY.
3
Department of Computer Science, Cornell University, Ithaca, NY.
4
Institute for Advanced Computational Science, Stony Brook University, Stony Brook, NY.

Abstract

The mammalian visual system consists of several anatomically distinct areas, layers, and cell types. To understand the role of these subpopulations in visual information processing, we analyzed neural signals recorded from excitatory neurons from various anatomical and functional structures. For each of 186 mice, one of six genetically tagged cell types and one of six visual areas were targeted while the mouse was passively viewing various visual stimuli. We trained linear classifiers to decode one of six visual stimulus categories with distinct spatiotemporal structures from the population neural activity. We found that neurons in both the primary visual cortex and secondary visual areas show varying degrees of stimulus-specific decodability, and neurons in superficial layers tend to be more informative about the stimulus categories. Additional decoding analyses of directional motion were consistent with these findings. We observed synergy in the population code of direction in several visual areas suggesting area-specific organization of information representation across neurons. These differences in decoding capacities shed light on the specialized organization of neural information processing across anatomically distinct subpopulations, and further establish the mouse as a model for understanding visual perception.

KEYWORDS:

decoding; population; visual cortex

PMID:
30073193
PMCID:
PMC6071196
DOI:
10.1523/ENEURO.0414-17.2018
[Indexed for MEDLINE]
Free PMC Article

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