Single Canonical Model of Reflexive Memory and Spatial Attention

Overview

Journal Sci Rep

Specialty Science

Date 2015 Oct 24

PMID 26493949

Citations 1

Authors

Saumil S Patel

Stuart Red

Eric Lin

Anne B Sereno

Affiliations

Soon will be listed here.

Abstract

Many neurons in the dorsal and ventral visual stream have the property that after a brief visual stimulus presentation in their receptive field, the spiking activity in these neurons persists above their baseline levels for several seconds. This maintained activity is not always correlated with the monkey's task and its origin is unknown. We have previously proposed a simple neural network model, based on shape selective neurons in monkey lateral intraparietal cortex, which predicts the valence and time course of reflexive (bottom-up) spatial attention. In the same simple model, we demonstrate here that passive maintained activity or short-term memory of specific visual events can result without need for an external or top-down modulatory signal. Mutual inhibition and neuronal adaptation play distinct roles in reflexive attention and memory. This modest 4-cell model provides the first simple and unified physiologically plausible mechanism of reflexive spatial attention and passive short-term memory processes.

Citing Articles

Attention Effects on Neural Population Representations for Shape and Location Are Stronger in the Ventral than Dorsal Stream.

Sereno A, Lehky S eNeuro. 2018; 5(2).

PMID: 29876521 PMC: 5988342. DOI: 10.1523/ENEURO.0371-17.2018.

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