Beer, Anton L. and Watanabe, Takeo (2009) Specificity of auditory-guided visual perceptual learning suggests crossmodal plasticity in early visual cortex. EXPERIMENTAL BRAIN RESEARCH, 198 (2-3). pp. 353-361. ISSN 0014-4819,
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Sounds modulate visual perception. Blind humans show altered brain activity in early visual cortex. However, it is still unclear whether crossmodal activity in visual cortex results from unspecific top-down feedback, a lack of visual input, or genuinely reflects crossmodal interactions at early sensory levels. We examined how sounds affect visual perceptual learning in sighted adults. Visual motion discrimination was tested prior to and following eight sessions in which observers were exposed to irrelevant moving dots while detecting sounds. After training, visual discrimination improved more strongly for motion directions that were paired with a relevant sound during training than for other directions. Crossmodal learning was limited to visual Weld locations that overlapped with the sound source and was little affected by attention. The specificity and automatic nature of these learning effects suggest that sounds automatically guide visual plasticity at a relatively early level of processing.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MODAL SPATIAL ATTENTION; CONGENITALLY BLIND; AUDIOVISUAL LINKS; TEXTURE-DISCRIMINATION; SOUND LOCALIZATION; ORIENTATION; MOTION; NEURONS; FREQUENCY; Crossmodal plasticity; Multisensory integration; Perceptual learning; Visual perception; Psychophysics |
| Subjects: | 100 Philosophy & psychology > 150 Psychology |
| Divisions: | Human Sciences > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Sep 2020 13:02 |
| Last Modified: | 08 Sep 2020 13:02 |
| URI: | https://pred.uni-regensburg.de/id/eprint/28457 |
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