EurekaMag.com logo
+ Site Statistics
References:
47,893,527
Abstracts:
28,296,643
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Direct intracranial recording of body-selective responses in human extrastriate visual cortex






Neuropsychologia 45(11): 2621-2625

Direct intracranial recording of body-selective responses in human extrastriate visual cortex

We recorded intracranial local field potentials (iLFPs) in right extrastriate visual cortex of a patient prior to surgery for epilepsy. Visual evoked potentials revealed a highly selective response to images of bodies, relative to faces, mammals, and tools, which was restricted to a focal region in the lateral occipitotemporal cortex that corresponds to the location of the extrastriate body area (EBA). Body-selective activity started around 190 ms and peaked 260 ms post-stimulus onset. These findings provide the first direct electrophysiological evidence for an early visual processing stage in human lateral occipitotemporal cortex that is specialized for processing human body shapes.


Accession: 015516615

PMID: 17499819

DOI: 10.1016/j.neuropsychologia.2007.04.005



Related references

Bracci, S.; Ietswaart, M.; Peelen, M.V.; Cavina-Pratesi, C., 2010: Dissociable neural responses to hands and non-hand body parts in human left extrastriate visual cortex. Accumulating evidence points to a map of visual regions encoding specific categories of objects. For example, a region in the human extrastriate visual cortex, the extrastriate body area (EBA), has been implicated in the visual processing of bodie...

Weiner, K.S.; Grill-Spector, K., 2011: Not one extrastriate body area: using anatomical landmarks, hMT+, and visual field maps to parcellate limb-selective activations in human lateral occipitotemporal cortex. The prevailing view of human lateral occipitotemporal cortex (LOTC) organization suggests a single area selective for images of the human body (extrastriate body area, EBA) that highly overlaps with the human motion-selective complex (hMT+). Using...

Striem-Amit, E.; Amedi, A., 2014: Visual cortex extrastriate body-selective area activation in congenitally blind people "seeing" by using sounds. Vision is by far the most prevalent sense for experiencing others' body shapes, postures, actions, and intentions, and its congenital absence may dramatically hamper body-shape representation in the brain. We investigated whether the absence...

Mangun, G.R.; Hopfinger, J.B.; Kussmaul, C.L.; Fletcher, E.M.; Heinze, H.J., 1997: Covariations in ERP and PET measures of spatial selective attention in human extrastriate visual cortex. In a previous study using positron emission tomography (PET), we demonstrated that focused attention to a location in the visual field produced increased regional cerebral blood flow in the fusiform gyrus contralateral to the attended hemifield (H...

Jha, A.P.; Buonocore, M.; Girelli, M.; Mangun, G.R., 1997: FMRI and ERP studies of the organization of spatial selective attention in human extrastriate visual cortex. Society for Neuroscience Abstracts 23(1-2): 301

Pelphrey, K.A.; Lopez, J.; Morris, J.P., 2009: Developmental continuity and change in responses to social and nonsocial categories in human extrastriate visual cortex. It is well known that adult human extrastriate visual cortex contains areas that respond in a selective fashion to specific categories of visual stimuli. Three regions have been identified with particular regularity: the fusiform face area (FFA),...

Arroyo, S.; Krauss, G.L.; Poon, W.T.t; Uematsu, S.; Gordon, B.; Lesser, R.P., 1994: Visual processing in the human cortex Results from direct cortical recording of visual evoked potentials. Neurology 44(4 SUPPL 2): A232

Banks, M.I.; Uhlrich, D.J.; Smith, P.H.; Krause, B.M.; Manning, K.A., 2012: Descending projections from extrastriate visual cortex modulate responses of cells in primary auditory cortex. Primary sensory cortical responses are modulated by the presence or expectation of related sensory information in other modalities, but the sources of multimodal information and the cellular locus of this integration are unclear. We investigated t...

Bleasel, A.F.; Birkett, J., 2000: Direct cortical recording of pattern reversal visual evoked responses better defines primary visual cortex than cortical stimulation of subdural electrodes. Epilepsia 41(Supplement 7): 168

Moran, J.; Desimone, R., 1985: Selective attention gates visual processing in the extrastriate cortex. Single cells were recorded in the visual cortex of monkeys trained to attend to stimuli at one location in the visual-field and ignore stimuli at another. When both locations were within the receptive field of a cell in prestriate area V4 or the i...