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Tracking Without Perceiving: A Dissociation Between Eye Movements and Motion Perception.

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Title: Tracking Without Perceiving: A Dissociation Between Eye Movements and Motion Perception.
Authors: Spering, Miriam, Pomplun, Marc, Carrasco, Marisa
Source: Psychological Science (0956-7976). Feb2011, Vol. 22 Issue 2, p216-225. 10p.
Subjects: Eye movements, Visual fields, Dissociation (Psychology), Motion perception (Vision), Diffraction gratings
Abstract: Can people react to objects in their visual field that they do not consciously perceive? We investigated how visual perception and motor action respond to moving objects whose visibility is reduced, and we found a dissociation between motion processing for perception and for action. We compared motion perception and eye movements evoked by two orthogonally drifting gratings, each presented separately to a different eye. The strength of each monocular grating was manipulated by inducing adaptation to one grating prior to the presentation of both gratings. Reflexive eye movements tracked the vector average of both gratings (pattern motion) even though perceptual responses followed one motion direction exclusively (component motion). Observers almost never perceived pattern motion. This dissociation implies the existence of visual-motion signals that guide eye movements in the absence of a corresponding conscious percept. [ABSTRACT FROM PUBLISHER]
Copyright of Psychological Science (0956-7976) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Tracking Without Perceiving: A Dissociation Between Eye Movements and Motion Perception.
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  Data: <searchLink fieldCode="AR" term="%22Spering%2C+Miriam%22">Spering, Miriam</searchLink><br /><searchLink fieldCode="AR" term="%22Pomplun%2C+Marc%22">Pomplun, Marc</searchLink><br /><searchLink fieldCode="AR" term="%22Carrasco%2C+Marisa%22">Carrasco, Marisa</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Eye+movements%22">Eye movements</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+fields%22">Visual fields</searchLink><br /><searchLink fieldCode="DE" term="%22Dissociation+%28Psychology%29%22">Dissociation (Psychology)</searchLink><br /><searchLink fieldCode="DE" term="%22Motion+perception+%28Vision%29%22">Motion perception (Vision)</searchLink><br /><searchLink fieldCode="DE" term="%22Diffraction+gratings%22">Diffraction gratings</searchLink>
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  Data: Can people react to objects in their visual field that they do not consciously perceive? We investigated how visual perception and motor action respond to moving objects whose visibility is reduced, and we found a dissociation between motion processing for perception and for action. We compared motion perception and eye movements evoked by two orthogonally drifting gratings, each presented separately to a different eye. The strength of each monocular grating was manipulated by inducing adaptation to one grating prior to the presentation of both gratings. Reflexive eye movements tracked the vector average of both gratings (pattern motion) even though perceptual responses followed one motion direction exclusively (component motion). Observers almost never perceived pattern motion. This dissociation implies the existence of visual-motion signals that guide eye movements in the absence of a corresponding conscious percept. [ABSTRACT FROM PUBLISHER]
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  Data: <i>Copyright of Psychological Science (0956-7976) is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1177/0956797610394659
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        Text: English
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        Type: general
      – SubjectFull: Visual fields
        Type: general
      – SubjectFull: Dissociation (Psychology)
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      – SubjectFull: Motion perception (Vision)
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              Text: Feb2011
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