Unknown

Dataset Information

0

Interaction between Spatial and Feature Attention in Posterior Parietal Cortex.


ABSTRACT: Lateral intraparietal (LIP) neurons encode a vast array of sensory and cognitive variables. Recently, we proposed that the flexibility of feature representations in LIP reflect the bottom-up integration of sensory signals, modulated by feature-based attention (FBA), from upstream feature-selective cortical neurons. Moreover, LIP activity is also strongly modulated by the position of space-based attention (SBA). However, the mechanisms by which SBA and FBA interact to facilitate the representation of task-relevant spatial and non-spatial features in LIP remain unclear. We recorded from LIP neurons during performance of a task that required monkeys to detect specific conjunctions of color, motion direction, and stimulus position. Here we show that FBA and SBA potentiate each other's effect in a manner consistent with attention gating the flow of visual information along the cortical visual pathway. Our results suggest that linear bottom-up integrative mechanisms allow LIP neurons to emphasize task-relevant spatial and non-spatial features.

SUBMITTER: Ibos G 

PROVIDER: S-EPMC5015486 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

altmetric image

Publications

Interaction between Spatial and Feature Attention in Posterior Parietal Cortex.

Ibos Guilhem G   Freedman David J DJ  

Neuron 20160804 4


Lateral intraparietal (LIP) neurons encode a vast array of sensory and cognitive variables. Recently, we proposed that the flexibility of feature representations in LIP reflect the bottom-up integration of sensory signals, modulated by feature-based attention (FBA), from upstream feature-selective cortical neurons. Moreover, LIP activity is also strongly modulated by the position of space-based attention (SBA). However, the mechanisms by which SBA and FBA interact to facilitate the representatio  ...[more]

Similar Datasets

| S-EPMC2664449 | biostudies-literature
| S-EPMC5415819 | biostudies-literature
| S-EPMC2778240 | biostudies-literature
| S-EPMC2809378 | biostudies-literature
| S-EPMC4737613 | biostudies-literature
| S-EPMC5907360 | biostudies-literature
| S-EPMC3307052 | biostudies-literature
| S-EPMC3862264 | biostudies-other
| S-EPMC6904218 | biostudies-literature
| S-EPMC2857595 | biostudies-literature