Localizing the Neural Substrate of Reflexive Covert Orienting
The capture of covert spatial attention by salient visual events influences subsequent gaze behavior. A task irrelevant stimulus (cue) can reduce (Attention capture) or prolong (Inhi-bition of return) saccade reaction time to a subsequent target stimulus depending on the cue-target delay. Here we in...
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doaj-4dbb8afa06aa437ea786a9c512bdc53d2021-05-28T13:34:27ZengBern Open PublishingJournal of Eye Movement Research1995-86922012-12-016110.16910/jemr.6.1.1Localizing the Neural Substrate of Reflexive Covert OrientingValerie Higenell0Brian J. White1Joshua R. Hwang2Douglas P. Munoz3Montreal Neurological Institute, McGill UniversityCentre for Neuroscience Studies, Queen’s UniversityUniversity of Western OntarioCentre for Neuroscience Studies, Queen’s UniversityThe capture of covert spatial attention by salient visual events influences subsequent gaze behavior. A task irrelevant stimulus (cue) can reduce (Attention capture) or prolong (Inhi-bition of return) saccade reaction time to a subsequent target stimulus depending on the cue-target delay. Here we investigated the mechanisms that underlie the sensory-based account of AC/IOR by manipulating the visual processing stage where the cue and target interact. In Experiment 1, liquid crystal shutter goggles were used to test whether AC/IOR occur at a monocular versus binocular processing stage (before versus after signals from both eyes converge). In Experiment 2, we tested whether visual orientation selective mechanisms are critical for AC/IOR by using oriented “Gabor” stimuli. We found that the magnitude of AC and IOR was not different between monocular and interocular viewing conditions, or between iso- and ortho-oriented cue-target interactions. The results suggest that the visual mechanisms that contribute to AC/IOR arise at an orientation-independent binocular processing stage.https://bop.unibe.ch/JEMR/article/view/2349saccademonocularattentionorientation tuningprimary visual cortex |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Valerie Higenell Brian J. White Joshua R. Hwang Douglas P. Munoz |
spellingShingle |
Valerie Higenell Brian J. White Joshua R. Hwang Douglas P. Munoz Localizing the Neural Substrate of Reflexive Covert Orienting Journal of Eye Movement Research saccade monocular attention orientation tuning primary visual cortex |
author_facet |
Valerie Higenell Brian J. White Joshua R. Hwang Douglas P. Munoz |
author_sort |
Valerie Higenell |
title |
Localizing the Neural Substrate of Reflexive Covert Orienting |
title_short |
Localizing the Neural Substrate of Reflexive Covert Orienting |
title_full |
Localizing the Neural Substrate of Reflexive Covert Orienting |
title_fullStr |
Localizing the Neural Substrate of Reflexive Covert Orienting |
title_full_unstemmed |
Localizing the Neural Substrate of Reflexive Covert Orienting |
title_sort |
localizing the neural substrate of reflexive covert orienting |
publisher |
Bern Open Publishing |
series |
Journal of Eye Movement Research |
issn |
1995-8692 |
publishDate |
2012-12-01 |
description |
The capture of covert spatial attention by salient visual events influences subsequent gaze behavior. A task irrelevant stimulus (cue) can reduce (Attention capture) or prolong (Inhi-bition of return) saccade reaction time to a subsequent target stimulus depending on the cue-target delay. Here we investigated the mechanisms that underlie the sensory-based account of AC/IOR by manipulating the visual processing stage where the cue and target interact. In Experiment 1, liquid crystal shutter goggles were used to test whether AC/IOR occur at a monocular versus binocular processing stage (before versus after signals from both eyes converge). In Experiment 2, we tested whether visual orientation selective mechanisms are critical for AC/IOR by using oriented “Gabor” stimuli. We found that the magnitude of AC and IOR was not different between monocular and interocular viewing conditions, or between iso- and ortho-oriented cue-target interactions. The results suggest that the visual mechanisms that contribute to AC/IOR arise at an orientation-independent binocular processing stage. |
topic |
saccade monocular attention orientation tuning primary visual cortex |
url |
https://bop.unibe.ch/JEMR/article/view/2349 |
work_keys_str_mv |
AT valeriehigenell localizingtheneuralsubstrateofreflexivecovertorienting AT brianjwhite localizingtheneuralsubstrateofreflexivecovertorienting AT joshuarhwang localizingtheneuralsubstrateofreflexivecovertorienting AT douglaspmunoz localizingtheneuralsubstrateofreflexivecovertorienting |
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1721423672357421056 |