Top-down controlled visual dimension weighting: an event-related fMRI study.

  title={Top-down controlled visual dimension weighting: an event-related fMRI study.},
  author={Ralph Weidner and Stefan Pollmann and Hermann J. M{\"u}ller and Gabi Matthes-von Cramon},
  journal={Cerebral cortex},
  volume={12 3},
Target detection in visual singleton feature search is slowed when consecutive targets are defined in different visual dimensions. Behavioral data provide evidence that attentional weight needs to be shifted between dimension-specific processing modules. We found similar dimension-specific change effects in a conjunction search task, in which observers searched for an odd-one-out target defined by a unique combination of size and color or, respectively, size and motion direction. Changes of the… CONTINUE READING

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