Feature-based attention modulates orientation-selective responses in human visual cortex.

@article{citeulike:1475164, abstract = {How does feature-based attention modulate neural responses? We used adaptation to quantify the effect of feature-based attention on orientation-selective responses in human visual cortex. Observers were adapted to two superimposed oblique gratings while attending to one grating only. We measured the magnitude of attention-induced orientation-selective adaptation both psychophysically, by the behavioral tilt aftereffect, and physiologically, using fMRI response adaptation. We found evidence for orientation-selective attentional modulation of neuronal responses-a lower fMRI response for the attended than the unattended orientation-in multiple visual areas, and a significant correlation between the magnitude of the tilt aftereffect and that of fMRI response adaptation in V1, the earliest site of orientation coding. These results show that feature-based attention can selectively increase the response of neuronal subpopulations that prefer the attended feature, even when the attended and unattended features are coded in the same visual areas and share the same retinotopic location.}, address = {Department of Psychology and Center for Neural Science, New York University, New York, NY 10027, USA.}, author = {Liu, T. and Larsson, J. and Carrasco, M. }, citeulike-article-id = {1475164}, doi = {10.1016/j.neuron.2007.06.030}, issn = {0896-6273}, journal = {Neuron}, keywords = {attention}, month = {July}, number = {2}, pages = {313--323}, posted-at = {2008-05-02 12:53:05}, priority = {2}, title = {Feature-based attention modulates orientation-selective responses in human visual cortex.}, url = {http://dx.doi.org/10.1016/j.neuron.2007.06.030}, volume = {55}, year = {2007} }

TY - JOUR ID - citeulike:1475164 L3 - citeulike-article-id:1475164 TI - Feature-based attention modulates orientation-selective responses in human visual cortex. JF - Neuron VL - 55 IS - 2 SP - 313 EP - 323 AD - Department of Psychology and Center for Neural Science, New York University, New York, NY 10027, USA. SN - 0896-6273 N2 - How does feature-based attention modulate neural responses? We used adaptation to quantify the effect of feature-based attention on orientation-selective responses in human visual cortex. Observers were adapted to two superimposed oblique gratings while attending to one grating only. We measured the magnitude of attention-induced orientation-selective adaptation both psychophysically, by the behavioral tilt aftereffect, and physiologically, using fMRI response adaptation. We found evidence for orientation-selective attentional modulation of neuronal responses-a lower fMRI response for the attended than the unattended orientation-in multiple visual areas, and a significant correlation between the magnitude of the tilt aftereffect and that of fMRI response adaptation in V1, the earliest site of orientation coding. These results show that feature-based attention can selectively increase the response of neuronal subpopulations that prefer the attended feature, even when the attended and unattended features are coded in the same visual areas and share the same retinotopic location. KW - attention AU - Liu, T AU - Larsson, J AU - Carrasco, M PY - 2007/07/19/ UR - http://dx.doi.org/10.1016/j.neuron.2007.06.030 ER -