August 2010
Volume 10, Issue 7
Free
Vision Sciences Society Annual Meeting Abstract  |   August 2010
Classification of Natural Sounds from Visual Cortex Activity
Author Affiliations
  • Petra Vetter
    Centre for Cognitive Neuroimaging, Dept. of Psychology, University of Glasgow
  • Fraser Smith
    Centre for Cognitive Neuroimaging, Dept. of Psychology, University of Glasgow
  • Lucy Petro
    Centre for Cognitive Neuroimaging, Dept. of Psychology, University of Glasgow
  • Lars Muckli
    Centre for Cognitive Neuroimaging, Dept. of Psychology, University of Glasgow
Journal of Vision August 2010, Vol.10, 893. doi:10.1167/10.7.893
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      Petra Vetter, Fraser Smith, Lucy Petro, Lars Muckli; Classification of Natural Sounds from Visual Cortex Activity. Journal of Vision 2010;10(7):893. doi: 10.1167/10.7.893.

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Abstract

We investigated whether contextual auditory information is contained in the neural activity pattern of visual cortex in a category-specific manner. While being blindfolded, subjects were presented with three types of natural sounds: a forest scene (animate/non-human), a talking crowd (animate/human) and traffic noise (inanimate). We used multivariate pattern analysis (linear support vector machines) to classify the three different sounds from BOLD activity pattern in early visual cortex as identified with retinotopic mapping. Preliminary results show above chance classification in visual areas V2 and V3. This suggests that contextual information from the auditory modality shapes the neural activity pattern in early visual cortex, in a category-specific manner and in the absence of visual stimulation.

Vetter, P. Smith, F. Petro, L. Muckli, L. (2010). Classification of Natural Sounds from Visual Cortex Activity [Abstract]. Journal of Vision, 10(7):893, 893a, http://www.journalofvision.org/content/10/7/893, doi:10.1167/10.7.893. [CrossRef]
Footnotes
 BBSRC.
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