"Overt responses during covert orienting." by Brian D Corneil and Douglas P Munoz
 

Document Type

Article

Publication Date

6-18-2014

Journal

Neuron

Volume

82

Issue

6

First Page

1230

Last Page

1243

URL with Digital Object Identifier

10.1016/j.neuron.2014.05.040

Abstract

A distributed network of cortical and subcortical brain areas controls our oculomotor behavior. This network includes the superior colliculus (SC), which coordinates an ancient visual grasp reflex via outputs that ramify widely within the brainstem and spinal cord, accessing saccadic and other premotor and autonomic circuits. In this Review, we discuss recent results correlating subliminal SC activity in the absence of saccades with diverse components of the visual grasp reflex, including neck and limb muscle recruitment, pupil dilation, and microsaccade propensity. Such subtle manifestations of covert orienting are accessible in the motor periphery and may provide the next generation of oculomotor biomarkers in health and disease.

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