A Vertical Asymmetry in Saccades

Abegg, Mathias (2015). A Vertical Asymmetry in Saccades. Journal of Eye Movement Research JEMR, 8(5), pp. 1-10. International Group for Eye Movement Research

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Visual exploration of natural scenes imposes demands that differ between the upper and the lower visual hemifield. Yet little is known about how ocular motor performance is affected by the location of visual stimuli or the direction of a behavioural response. We compared saccadic latencies between upper and lower hemifield in a variety of conditions, including short-latency prosaccades, long-latency prosaccades, antisaccades, memory-guided sac- cades and saccades with increased attentional and selection demand. All saccade types, except memory guided saccades, had shorter latencies when saccades were directed to- wards the upper field as compared to downward saccades (p<0.05). This upper field reaction time advantage probably arises in ocular motor rather than visual processing. It may originate in structures involved in motor preparation rather than execution.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ophthalmology

UniBE Contributor:

Abegg, Mathias

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1995-8692

Publisher:

International Group for Eye Movement Research

Language:

English

Submitter:

Mathias Abegg

Date Deposited:

02 Dec 2015 10:42

Last Modified:

19 Apr 2018 15:47

BORIS DOI:

10.7892/boris.73270

URI:

https://boris.unibe.ch/id/eprint/73270

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