Learning to reach for 'invisible' visual input

Roseboom, Warrick and Arnold, Derek H. (2011) Learning to reach for 'invisible' visual input. Current Biology, 21 13: R493-R494. doi:10.1016/j.cub.2011.05.036


Author Roseboom, Warrick
Arnold, Derek H.
Title Learning to reach for 'invisible' visual input
Journal name Current Biology   Check publisher's open access policy
ISSN 0960-9822
1879-0445
Publication date 2011-07
Sub-type Letter to editor, brief commentary or brief communication
DOI 10.1016/j.cub.2011.05.036
Volume 21
Issue 13
Start page R493
End page R494
Total pages 2
Place of publication Cambridge, MA, United States
Publisher Cell Press
Collection year 2012
Language eng
Formatted abstract
Patients who have suffered damage to primary visual cortex can report being blind but display some proficiency when manually interacting with ‘unseen’ objects — a phenomenon known as blindsight [1] , [2] , [3] and [4] . There is conflicting evidence about analogous situations in normally sighted people [5] , [6] and [7] ; however, to date no study has attempted to assess a directly analogous situation, to have normally sighted people interact with unseen stimuli. We used a form of binocular masking to suppress awareness of oriented stimuli [8]. Despite initial insensitivity when making verbal judgements, participants who reached as if to grasp perceptually suppressed stimuli displayed increasing proficiency with training and feedback. This was not simply due to practise, as another group did not develop such proficiency when completing a matched number of trials, with feedback, while making verbal responses; however, this same group subsequently developed sensitivity when they too completed training with reaching and feedback. Our data thus reveal a special status for attempts to grasp perceptually suppressed stimuli.
Keyword Hemianopic field
Cortex
Discrimination
Blindsight
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Letter to editor, brief commentary or brief communication
Collections: Official 2012 Collection
School of Psychology Publications
 
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