Visual selection in human frontal eye fields

Jacinta O'Shea, Neil G. Muggleton, Alan Cowey, Vincent Walsh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Frontal eye field neurons discharge in response to behaviourally relevant stimuli that are potential targets for saccades. Distinct perceptual and oculomotor processes have been dissociated in the monkey FEFs, but little is known about the perceptual capacity of human FEFs. To explore this, transcranial magnetic stimulation (TMS) was applied over the FEFs while subjects carried out visual search. TMS impaired search performance (d′) when applied between 40 and 80ms after search array onset. Unit recordings show that FEF signal during this time period predicts monkeys' behavioural reports on hit, miss, false alarm and correct rejection trials. Our data demonstrate that the human FEFs make a critical early contribution to search performance. We argue that this reflects the operation of a visuospatial selection process within the FEFs that is not reducible to saccade programs.

Original languageEnglish
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Pages195-204
Number of pages10
DOIs
StatePublished - 2005
Event1st International Symposium on Brain, Vision, and Artificial Intelligence, BVAI 2005 - Naples, Italy
Duration: 19 Oct 200521 Oct 2005

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3704 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference1st International Symposium on Brain, Vision, and Artificial Intelligence, BVAI 2005
Country/TerritoryItaly
CityNaples
Period19/10/0521/10/05

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