Visual selection in human frontal eye fields

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

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

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.

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主出版物標題Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
頁面195-204
頁數10
DOIs
出版狀態已出版 - 2005
事件1st International Symposium on Brain, Vision, and Artificial Intelligence, BVAI 2005 - Naples, Italy
持續時間: 19 10月 200521 10月 2005

出版系列

名字Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
3704 LNCS
ISSN(列印)0302-9743
ISSN(電子)1611-3349

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???event.eventtypes.event.conference???1st International Symposium on Brain, Vision, and Artificial Intelligence, BVAI 2005
國家/地區Italy
城市Naples
期間19/10/0521/10/05

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