Modulation of the parieto-occipital alpha rhythm during object detection.

  title={Modulation of the parieto-occipital alpha rhythm during object detection.},
  author={Simo Vanni and Antti Revonsuo and Riitta Hari},
  journal={The Journal of neuroscience : the official journal of the Society for Neuroscience},
  volume={17 18},
Changes in the human neuromagnetic alpha rhythm were monitored during an object detection task to study the effects of visual shape processing on the parieto-occipital activity. Pictures of coherent meaningful objects, which the observers had to detect, and of disorganized meaningless non-objects were presented briefly between masks. The non-objects were systematically followed by a higher level of alpha than the objects, the difference emerging on average 400 msec after the stimulus, with a… CONTINUE READING
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