Different Processing Phases for Features, Figures, and Selective Attention in the Primary Visual Cortex.

@article{citeulike:2086031, abstract = {Our visual system imposes structure onto images that usually contain a diversity of surfaces, contours, and colors. Psychological theories propose that there are multiple steps in this process that occur in hierarchically organized regions of the cortex: early visual areas register basic features, higher areas bind them into objects, and yet higher areas select the objects that are relevant for behavior. Here we test these theories by recording from the primary visual cortex (area V1) of monkeys. We demonstrate that the V1 neurons first register the features (at a latency of 48 ms), then segregate figures from the background (after 57 ms), and finally select relevant figures over irrelevant ones (after 137 ms). We conclude that the psychological processing stages map onto distinct time episodes that unfold in the visual cortex after the presentation of a new stimulus, so that area V1 may contribute to all these processing steps.}, address = {Department of Vision and Cognition, Netherlands Institute for Neuroscience, an institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands, Meibergdreef 47, 1105 BA Amsterdam, the Netherlands; Department of Experimental Neurophysiology, Centre for Neurogenomics and Cognitive Research, VU University, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands.}, author = {Roelfsema, Pieter R R. and Tolboom, Michiel and Khayat, Paul S S. }, citeulike-article-id = {2086031}, doi = {http://dx.doi.org/10.1016/j.neuron.2007.10.006}, issn = {0896-6273}, journal = {Neuron}, keywords = {attention, cogneuro-spring2008, consciousness}, month = {December}, number = {5}, pages = {785--792}, posted-at = {2008-02-09 00:21:03}, priority = {3}, title = {Different Processing Phases for Features, Figures, and Selective Attention in the Primary Visual Cortex.}, url = {http://dx.doi.org/10.1016/j.neuron.2007.10.006}, volume = {56}, year = {2007} }

TY - JOUR ID - citeulike:2086031 L3 - citeulike-article-id:2086031 TI - Different Processing Phases for Features, Figures, and Selective Attention in the Primary Visual Cortex. JF - Neuron VL - 56 IS - 5 SP - 785 EP - 792 AD - Department of Vision and Cognition, Netherlands Institute for Neuroscience, an institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands, Meibergdreef 47, 1105 BA Amsterdam, the Netherlands; Department of Experimental Neurophysiology, Centre for Neurogenomics and Cognitive Research, VU University, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands. SN - 0896-6273 N2 - Our visual system imposes structure onto images that usually contain a diversity of surfaces, contours, and colors. Psychological theories propose that there are multiple steps in this process that occur in hierarchically organized regions of the cortex: early visual areas register basic features, higher areas bind them into objects, and yet higher areas select the objects that are relevant for behavior. Here we test these theories by recording from the primary visual cortex (area V1) of monkeys. We demonstrate that the V1 neurons first register the features (at a latency of 48 ms), then segregate figures from the background (after 57 ms), and finally select relevant figures over irrelevant ones (after 137 ms). We conclude that the psychological processing stages map onto distinct time episodes that unfold in the visual cortex after the presentation of a new stimulus, so that area V1 may contribute to all these processing steps. KW - attention KW - cogneuro-spring2008 KW - consciousness AU - Roelfsema, Pieter R AU - Tolboom, Michiel AU - Khayat, Paul S PY - 2007/12/06/ UR - http://dx.doi.org/10.1016/j.neuron.2007.10.006 ER -