Patients with tunnel vision frequently saccade to outside their visual fields in visual search

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Use of an augmented-vision device for visual search by patients with tunnel vision.

PURPOSE To study the effect of an augmented-vision device that superimposes minified contour images over natural vision on visual search performance of patients with tunnel vision. METHODS Twelve subjects with tunnel vision searched for targets presented outside their visual fields (VFs) on a blank background under three cue conditions (with contour cues provided by the device, with auditory ...

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61.1: Kinematics of Visual Search by Tunnel Vision Patients with Augmented Vision See-Through HMD

An augmented vision see-through HMD, which displays a minified contour view of the real world over the residual visual field of tunnel vision patients, was evaluated in a visual search experiment. Kinematic evaluation of subjects’ eye and head movements showed that tunnel vision patients could find and locate targets outside their visual fields faster and more efficiently with the device than w...

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Saccade Target Selection During Visual Search

Five experiments are reported in which eye movements were recorded while subjects carried out a visual search task. The aim was to investigate whether an accurate initial target directed saccade could be programmed. In experiments 1-2, subjects moved their eyes to targets defined by colour, which were presented with seven non-targets in a circular array. Accurate saccades with short latencies w...

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14 Saccade target selection in unconstrained visual search

Our visual system is regularly faced with more information than it can process at once. As a result, our visual experience generally arises from the sequential sampling of visual details by overtly shifting perceptual resources through reorienting the fovea with saccadic eye movements. An emerging view is that this natural visual behavior can be promoted in visual search tasks that do not empha...

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Predictive saccade target selection in superior colliculus during visual search.

Searching for a visual object naturally involves sequences of gaze fixations, during which the current foveal image is analyzed and the next object to inspect is selected as a saccade target. Fixation durations during such sequences are short, suggesting that saccades may be concurrently processed. Therefore, the selection of the next saccade target may occur before the current saccade target i...

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ژورنال

عنوان ژورنال: Journal of Vision

سال: 2010

ISSN: 1534-7362

DOI: 10.1167/6.6.505