Spatial integration and its moderation by attention and acetylcholine
作者： Mark J Roberts , Alexander Thiele
DOI: 10.2741/2963
关键词:
摘要: Attention is often regarded as a mechanism by which attended objects become perceptually more salient, akin to increasing their contrast. We demonstrate means of human psychophysics that attention better described reduces contextual integration, thereby ensuring task irrelevant information prevented from influencing the processing relevant information. To investigate possible neuronal bases this phenomenon we studied effects on spatial integration in V1 macaque monkey. In line with our psychophysical results, directed parafoveal locations reduced reducing summation area neurons. Additionally measured length tuning presence and absence externally applied acetylcholine marmoset The application were largely similar. Acetylcholine neuron's area. These data can alter perceptual might contribute dependent receptive field dynamics.
bioscience.org参考文章(94)
J. J. Knierim, D. C. van Essen, Neuronal responses to static texture patterns in area V1 of the alert macaque monkey Journal of Neurophysiology. ,vol. 67, pp. 961- 980 ,(1992) , 10.1152/JN.1992.67.4.961
M. E. Hasselmo, J. M. Bower, Cholinergic suppression specific to intrinsic not afferent fiber synapses in rat piriform (olfactory) cortex. Journal of Neurophysiology. ,vol. 67, pp. 1222- 1229 ,(1992) , 10.1152/JN.1992.67.5.1222
Uri Polat, Keiko Mizobe, Mark W. Pettet, Takuji Kasamatsu, Anthony M. Norcia, Collinear stimuli regulate visual responses depending on cell's contrast threshold Nature. ,vol. 391, pp. 580- 584 ,(1998) , 10.1038/35372
Maurizio Corbetta, J. Michelle Kincade, John M. Ollinger, Marc P. McAvoy, Gordon L. Shulman, Voluntary orienting is dissociated from target detection in human posterior parietal cortex Nature Neuroscience. ,vol. 3, pp. 292- 297 ,(2000) , 10.1038/73009
Yaffa Yeshurun, Marisa Carrasco, Attention improves or impairs visual performance by enhancing spatial resolution Nature. ,vol. 396, pp. 72- 75 ,(1998) , 10.1038/23936
Steven B. Backman, Pierre Fiset, Gilles Plourde, Cholinergic mechanisms mediating anesthetic induced altered states of consciousness. Progress in Brain Research. ,vol. 145, pp. 197- 206 ,(2004) , 10.1016/S0079-6123(03)45014-0
Michael P. Sceniak, Dario L. Ringach, Michael J. Hawken, Robert Shapley, Contrast's effect on spatial summation by macaque V1 neurons. Nature Neuroscience. ,vol. 2, pp. 733- 739 ,(1999) , 10.1038/11197
Alessandra Angelucci, Jonathan B. Levitt, Jennifer S. Lund, Anatomical origins of the classical receptive field and modulatory surround field of single neurons in macaque visual cortical area V1 Progress in Brain Research. ,vol. 136, pp. 373- 388 ,(2002) , 10.1016/S0079-6123(02)36031-X
Elliot Freeman, Dov Sagi, Jon Driver, Lateral interactions between targets and flankers in low-level vision depend on attention to the flankers. Nature Neuroscience. ,vol. 4, pp. 1032- 1036 ,(2001) , 10.1038/NN728
Gerald Westhhmer, Simultaneous orientation contrast for lines in the human fovea Vision Research. ,vol. 30, pp. 1913- 1921 ,(1990) , 10.1016/0042-6989(90)90167-J