The Journal of Neuroscience, 0000, 20:RC93:1-6
RAPID COMMUNICATION
Visual Attention to the Periphery Is Enhanced in
Congenitally Deaf Individuals
D.
Bavelier1,
A.
Tomann1,
C.
Hutton2,
T.
Mitchell3,
D.
Corina4,
G.
Liu5, and
H.
Neville3
1 University of Rochester, Brain and Cognitive
Sciences, Rochester, New York 14627-0268, 2 The Wellcome
Department of Cognitive Neurology, Institute of Neurology, London WC1N
3BG, United Kingdom, 3 Department of Psychology,
University of Oregon, Eugene, Oregon 97403-1227, 4 University of Washington, Department of Psychology,
Seattle, Washington 98125, and 5 Georgetown University,
Washington, D.C. 20007
We compared normally hearing individuals and congenitally deaf
individuals as they monitored moving stimuli either in the periphery or
in the center of the visual field. When participants monitored the
peripheral visual field, greater recruitment (as measured by functional
magnetic resonance imaging) of the motion-selective area MT/MST
was observed in deaf than in hearing individuals, whereas the two
groups were comparable when attending to the central visual field. This
finding indicates an enhancement of visual attention to peripheral
visual space in deaf individuals. Structural equation modeling
was used to further characterize the nature of this plastic change in
the deaf. The effective connectivity between MT/MST and the posterior
parietal cortex was stronger in deaf than in hearing individuals during
peripheral but not central attention. Thus, enhanced peripheral
attention to moving stimuli in the deaf may be mediated by alterations
of the connectivity between MT/MST and the parietal cortex, one of the
primary centers for spatial representation and attention.
Key words:
plasticity; visual attention; motion; deafness; fMRI; structural equation modeling; MT/MST-V5
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