This title appears in the Scientific Report :
2006
Please use the identifier:
http://dx.doi.org/10.1016/j.neuroimage.2005.09.013 in citations.
Selective and interactive neural correlates of visual dimension changes and response changes
Selective and interactive neural correlates of visual dimension changes and response changes
In an event-related fMRI study, we investigated the neural correlates of visual dimension and response changes. We used a compound task, which required target selection by a singleton feature, a unique color or motion direction, before the appropriate motor response, which was determined by target o...
Saved in:
Personal Name(s): | Pollmann, S. |
---|---|
Weidner, R. / Müller, H. J. / Maertens, M. / von Cramon, D. Y. | |
Contributing Institute: |
Institut für Medizin; IME |
Published in: | NeuroImage, 30 (2006) S. 254 - 265 |
Imprint: |
Orlando, Fla.
Academic Press
2006
|
Physical Description: |
254 - 265 |
DOI: |
10.1016/j.neuroimage.2005.09.013 |
PubMed ID: |
16263311 |
Document Type: |
Journal Article |
Research Program: |
Funktion und Dysfunktion des Nervensystems |
Series Title: |
NeuroImage
30 |
Subject (ZB): | |
Publikationsportal JuSER |
In an event-related fMRI study, we investigated the neural correlates of visual dimension and response changes. We used a compound task, which required target selection by a singleton feature, a unique color or motion direction, before the appropriate motor response, which was determined by target orientation, could be selected. Both types of change elicited distinct patterns of activation, with dimension-change-related activation primarily in posterior visual areas and response-related activation primarily in motor-related areas of the parietal and frontal cortices. Response-change-related activation was delayed by about 1 s relative to dimension-change-related activation, suggesting that the latter is elicited by perceptual processes, whereas the former reflects response-related or post-response processes. Although dimension changes and response changes rely on different processes, they are not independent: response facilitation was observed for combined dimension and response repetitions, this facilitation, however, was disrupted by dimension changes. |