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Circuits for presaccadic visual remapping.
Rao, Hrishikesh M; Mayo, J Patrick; Sommer, Marc A.
Afiliação
  • Rao HM; Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, North Carolina; hri.rao@gmail.com.
  • Mayo JP; Department of Neurobiology, Duke School of Medicine, Duke University, Durham, North Carolina; and.
  • Sommer MA; Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, North Carolina.
J Neurophysiol ; 116(6): 2624-2636, 2016 12 01.
Article em En | MEDLINE | ID: mdl-27655962
Saccadic eye movements rapidly displace the image of the world that is projected onto the retinas. In anticipation of each saccade, many neurons in the visual system shift their receptive fields. This presaccadic change in visual sensitivity, known as remapping, was first documented in the parietal cortex and has been studied in many other brain regions. Remapping requires information about upcoming saccades via corollary discharge. Analyses of neurons in a corollary discharge pathway that targets the frontal eye field (FEF) suggest that remapping may be assembled in the FEF's local microcircuitry. Complementary data from reversible inactivation, neural recording, and modeling studies provide evidence that remapping contributes to transsaccadic continuity of action and perception. Multiple forms of remapping have been reported in the FEF and other brain areas, however, and questions remain about the reasons for these differences. In this review of recent progress, we identify three hypotheses that may help to guide further investigations into the structure and function of circuits for remapping.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Movimentos Sacádicos / Vias Visuais / Encéfalo / Mapeamento Encefálico Limite: Animals / Humans Idioma: En Ano de publicação: 2016 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Movimentos Sacádicos / Vias Visuais / Encéfalo / Mapeamento Encefálico Limite: Animals / Humans Idioma: En Ano de publicação: 2016 Tipo de documento: Article