Spatial organization of multisensory responses in temporal association cortex. Export

@article{citeulike:5835316, abstract = {Neurons in sensory cortices are often topographically organized according to their response preferences. We here show that such an organization of response preferences also exists in multisensory association cortex. Using electrophysiological mappings, we probed the modality preference to auditory and visual stimuli of neurons in the superior temporal association cortex of nonhuman primates. We found that neurons preferring the same modality (auditory or visual) often co-occur in close spatial proximity or occur intermingled with bimodal neurons. Neurons preferring different modalities, in contrast, occur spatially separated. This organization at the scale of individual neurons leads to extended patches of same modality preference when analyzed at the scale of millimeters, revealing larger-scale regions that preferentially respond to the same modality. In addition, we find that neurons exhibiting signs of multisensory interactions, such as superadditive or subadditive response summation, also occur in spatial clusters. Together, these results reveal a spatial organization of modality preferences in a higher association cortex and lend support to the notion that topographical organizations might serve as a general principle of integrating information within and across the sensory modalities.}, author = {Dahl, Christoph D. and Logothetis, Nikos K. and Kayser, Christoph}, citeulike-article-id = {5835316}, citeulike-linkout-0 = {http://dx.doi.org/10.1523/JNEUROSCI.3437-09.2009}, citeulike-linkout-1 = {http://www.jneurosci.org/cgi/content/abstract/29/38/11924}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/19776278}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=19776278}, day = {23}, doi = {10.1523/JNEUROSCI.3437-09.2009}, issn = {1529-2401}, journal = {The Journal of neuroscience : the official journal of the Society for Neuroscience}, keywords = {anatomy, association\_cortex, topography}, month = {September}, number = {38}, pages = {11924--11932}, posted-at = {2009-09-24 10:31:35}, priority = {2}, title = {Spatial organization of multisensory responses in temporal association cortex.}, url = {http://dx.doi.org/10.1523/JNEUROSCI.3437-09.2009}, volume = {29}, year = {2009} }

TY - JOUR ID - citeulike:5835316 L3 - citeulike-article-id:5835316 N2 - Neurons in sensory cortices are often topographically organized according to their response preferences. We here show that such an organization of response preferences also exists in multisensory association cortex. Using electrophysiological mappings, we probed the modality preference to auditory and visual stimuli of neurons in the superior temporal association cortex of nonhuman primates. We found that neurons preferring the same modality (auditory or visual) often co-occur in close spatial proximity or occur intermingled with bimodal neurons. Neurons preferring different modalities, in contrast, occur spatially separated. This organization at the scale of individual neurons leads to extended patches of same modality preference when analyzed at the scale of millimeters, revealing larger-scale regions that preferentially respond to the same modality. In addition, we find that neurons exhibiting signs of multisensory interactions, such as superadditive or subadditive response summation, also occur in spatial clusters. Together, these results reveal a spatial organization of modality preferences in a higher association cortex and lend support to the notion that topographical organizations might serve as a general principle of integrating information within and across the sensory modalities. IS - 38 JF - The Journal of neuroscience : the official journal of the Society for Neuroscience SN - 1529-2401 EP - 11932 TI - Spatial organization of multisensory responses in temporal association cortex. VL - 29 SP - 11924 KW - anatomy KW - association_cortex KW - topography AU - Dahl, Christoph AU - Logothetis, Nikos AU - Kayser, Christoph PY - 2009/09/23/ UR - http://dx.doi.org/10.1523/JNEUROSCI.3437-09.2009 ER -