PMID: 9443366Jan 1, 1997Paper

Tactile-spatial and cross-modal attention effects in the second somatosensory and 7b cortical areas of rhesus monkeys

Somatosensory & Motor Research
H BurtonK Whang

Abstract

This study analyzed neuronal responses in the second somatosensory (SII) and 7b cortical areas during a selective attention task. Cues directed attention to one of three simultaneous stimuli: vibrotactile stimuli applied to mirror sites on both hands or to a similarly timed auditory tone. Two stimulus patterns appeared with equal probability for the cued stimulus: a constant amplitude sinewave or the latter with a superimposed brief amplitude pulse midway in the trial. Uncued stimuli always contained amplitude pulses. Monkeys demonstrated whether an amplitude pulse at the cued location was present or absent by making appropriately rewarded up and down foot pedal movements. Cue location and stimulus pattern varied trial-wise and pseudo-randomly. Average firing rates to vibrotactile stimuli in 82 of 181 SII cells and 13 of 22 area 7b cells differed significantly during at least one epoch for trials cued to the contralateral hand when compared to trials cued to the ipsilateral hand or auditory stimulus. Predominant were relatively suppressed firing rates during times prior to the epoch containing the amplitude pulses or enhanced activity during and after these pulses. Generally, different cells showed suppression early vs enhancem...Continue Reading

Citations

Jan 11, 2001·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·H Burton, R J Sinclair
Mar 29, 2007·Human Brain Mapping·Harold BurtonDonald G McLaren
Jun 24, 2016·Journal of Neurophysiology·Manuel Gomez-RamirezErnst Niebur
Aug 3, 2001·Nature Reviews. Neuroscience·E Salinas, T J Sejnowski
Apr 3, 2001·Annual Review of Neuroscience·R Romo, E Salinas
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Jun 29, 2007·Journal of Neurophysiology·A RoyE Niebur
Mar 4, 2000·The Journal of Comparative Neurology·E DisbrowL Krubitzer
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Apr 12, 2014·Brain Topography·Ryan A StevensonMark T Wallace
Sep 9, 2005·Journal of Neurophysiology·C Elaine Chapman, El-Mehdi Meftah
Sep 10, 2002·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Ranulfo RomoEmilio Salinas
Jul 3, 2009·Human Brain Mapping·Jennifer K DionneW Richard Staines

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