ANU Open Research Repository has been upgraded. We are still working on a few minor issues, which may result in short outages throughout the day. Please get in touch with repository.admin@anu.edu.au if you experience any issues.
 

Effects of saccades on visual processing in primate MSTd

Date

2010

Authors

Cloherty, Shaun
Mustari, Michael J
Rosa, Marcello
Ibbotson, Michael

Journal Title

Journal ISSN

Volume Title

Publisher

Pergamon-Elsevier Ltd

Abstract

In surveying their visual environment, primates, including humans make frequent rapid eye movements known as saccades. Saccades result in rapid motion of the retinal image and yet this motion is not perceived. We recorded saccade-related changes in neural activity in the dorsal medial superior temporal area (MSTd) of alert macaque monkeys. We show that the spontaneous activity of neurons in MSTd is modulated around the time of saccades. Some cells show considerable suppression of spontaneous activity, while most show early and significant enhancement. While this modulation of spontaneous activity is variable, the concomitant modulation of neural responses evoked by flashed visual stimuli is uniform and stereotypical - visual responses are suppressed for stimuli presented around the time of saccades and enhanced for stimuli presented afterwards. The combined modulation of spontaneous activity and evoked visual responses likely serves to reduce the detectability of peri-saccadic stimuli and promote the perceptual awareness of visual stimuli between saccades.

Description

Keywords

Keywords: animal experiment; article; brain cortex; controlled study; dorsal medial superior temporal cortex; nerve function; neuromodulation; nonhuman; parietal lobe; priority journal; retina image; rhesus monkey; saccadic eye movement; stereotypy; stimulus respon Eye movements; Macaque cortex; Perception; Post-saccadic enhancement; Saccadic suppression; Visual system

Citation

Source

Vision Research

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1016/j.visres.2010.08.020

Restricted until

2037-12-31