Mirroring of attention by neurons in macaque parietal cortex.

Published

Journal Article

Macaques, like humans, rapidly orient their attention in the direction other individuals are looking. Both cortical and subcortical pathways have been proposed as neural mediators of social gaze following, but neither pathway has been characterized electrophysiologically in behaving animals. To address this gap, we recorded the activity of single neurons in the lateral intraparietal area (LIP) of rhesus macaques to determine whether and how this area might contribute to gaze following. A subset of LIP neurons mirrored observed attention by firing both when the subject looked in the preferred direction of the neuron, and when observed monkeys looked in the preferred direction of the neuron, despite the irrelevance of the monkey images to the task. Importantly, the timing of these modulations matched the time course of gaze-following behavior. A second population of neurons was suppressed by social gaze cues, possibly subserving task demands by maintaining fixation on the observed face. These observations suggest that LIP contributes to sharing of observed attention and link mirror representations in parietal cortex to a well studied imitative behavior.

Full Text

Cited Authors

  • Shepherd, SV; Klein, JT; Deaner, RO; Platt, ML

Published Date

  • June 9, 2009

Published In

Volume / Issue

  • 106 / 23

Start / End Page

  • 9489 - 9494

PubMed ID

  • 19470477

Pubmed Central ID

  • 19470477

Electronic International Standard Serial Number (EISSN)

  • 1091-6490

Digital Object Identifier (DOI)

  • 10.1073/pnas.0900419106

Language

  • eng

Conference Location

  • United States