Selective attention effects on somatosensory evoked potentials. Papanicolaou, A. C., Moore, B. D., & Gary, H. E. Int J Neurosci, 45(3-4):277-82, Apr, 1989. abstract bibtex Division of Neurosurgery, University of Texas, Medical Branch, Galveston 77550. Short and long latency somatosensory evoked potentials (SEPs) to median nerve stimulation were recorded over the contralateral hemisphere. Simultaneously, signals evoked by the same stimulus were monitored at Erb's point. Recordings were made during three conditions which were presented in a different random order to each of the subjects tested. During the control condition the subjects were instructed to attend to and count the number of electrical pulses delivered to the median nerve of their right hand. During the two task conditions, in addition to the pulses, the subjects received stimulation on the dorsal surface of one of their hands. This consisted in drawing circles lightly for the duration of SEP recording using a cotton swab (Q-tip). During the trial, the Q-tip was momentarily withdrawn 15 to 20 times and the subject's task was to ignore the pulses, attend to this cutaneous stimulation and count the number of times the cutaneous stimulation was interrupted. SEPs to the pulse were significantly greater in amplitude when cutaneous stimulation was delivered to the same hand as the pulse (the right hand) than when it was delivered to the left hand. This effect was confined to the long-latency SEPs and did not appear in either the Erb's point response or the short latency SEPs. These data indicate that selective attention to peripheral stimulation is a relatively late process mediated by cortical mechanisms and argue against the notion of early suppression of irrelevant stimulus channels in subcortical centers or in the periphery.(ABSTRACT TRUNCATED AT 250 WORDS)
@article{ Papanicolaou_etal89,
author = {Papanicolaou, A. C. and Moore, B. D. and Gary, H. E.},
title = {Selective attention effects on somatosensory evoked potentials},
journal = {Int J Neurosci},
year = {1989},
volume = {45},
pages = {277-82},
number = {3-4},
month = {Apr},
abstract = {Division of Neurosurgery, University of Texas, Medical Branch, Galveston
77550. Short and long latency somatosensory evoked potentials (SEPs)
to median nerve stimulation were recorded over the contralateral
hemisphere. Simultaneously, signals evoked by the same stimulus were
monitored at Erb's point. Recordings were made during three conditions
which were presented in a different random order to each of the subjects
tested. During the control condition the subjects were instructed
to attend to and count the number of electrical pulses delivered
to the median nerve of their right hand. During the two task conditions,
in addition to the pulses, the subjects received stimulation on the
dorsal surface of one of their hands. This consisted in drawing circles
lightly for the duration of SEP recording using a cotton swab (Q-tip).
During the trial, the Q-tip was momentarily withdrawn 15 to 20 times
and the subject's task was to ignore the pulses, attend to this cutaneous
stimulation and count the number of times the cutaneous stimulation
was interrupted. SEPs to the pulse were significantly greater in
amplitude when cutaneous stimulation was delivered to the same hand
as the pulse (the right hand) than when it was delivered to the left
hand. This effect was confined to the long-latency SEPs and did not
appear in either the Erb's point response or the short latency SEPs.
These data indicate that selective attention to peripheral stimulation
is a relatively late process mediated by cortical mechanisms and
argue against the notion of early suppression of irrelevant stimulus
channels in subcortical centers or in the periphery.(ABSTRACT TRUNCATED
AT 250 WORDS)}
}
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{"_id":"NMKpBFfZnsfmaGLGZ","bibbaseid":"papanicolaou-moore-gary-selectiveattentioneffectsonsomatosensoryevokedpotentials-1989","downloads":0,"creationDate":"2015-02-08T05:14:54.564Z","title":"Selective attention effects on somatosensory evoked potentials","author_short":["Papanicolaou, A.<nbsp>C.","Moore, B.<nbsp>D.","Gary, H.<nbsp>E."],"year":1989,"bibtype":"article","biburl":"http://cnslab.mb.jhu.edu/niebase.bib","bibdata":{"abstract":"Division of Neurosurgery, University of Texas, Medical Branch, Galveston 77550. Short and long latency somatosensory evoked potentials (SEPs) to median nerve stimulation were recorded over the contralateral hemisphere. Simultaneously, signals evoked by the same stimulus were monitored at Erb's point. Recordings were made during three conditions which were presented in a different random order to each of the subjects tested. During the control condition the subjects were instructed to attend to and count the number of electrical pulses delivered to the median nerve of their right hand. During the two task conditions, in addition to the pulses, the subjects received stimulation on the dorsal surface of one of their hands. This consisted in drawing circles lightly for the duration of SEP recording using a cotton swab (Q-tip). During the trial, the Q-tip was momentarily withdrawn 15 to 20 times and the subject's task was to ignore the pulses, attend to this cutaneous stimulation and count the number of times the cutaneous stimulation was interrupted. SEPs to the pulse were significantly greater in amplitude when cutaneous stimulation was delivered to the same hand as the pulse (the right hand) than when it was delivered to the left hand. This effect was confined to the long-latency SEPs and did not appear in either the Erb's point response or the short latency SEPs. These data indicate that selective attention to peripheral stimulation is a relatively late process mediated by cortical mechanisms and argue against the notion of early suppression of irrelevant stimulus channels in subcortical centers or in the periphery.(ABSTRACT TRUNCATED AT 250 WORDS)","author":["Papanicolaou, A. C.","Moore, B. D.","Gary, H. E."],"author_short":["Papanicolaou, A.<nbsp>C.","Moore, B.<nbsp>D.","Gary, H.<nbsp>E."],"bibtex":"@article{ Papanicolaou_etal89,\n author = {Papanicolaou, A. C. and Moore, B. D. and Gary, H. E.},\n title = {Selective attention effects on somatosensory evoked potentials},\n journal = {Int J Neurosci},\n year = {1989},\n volume = {45},\n pages = {277-82},\n number = {3-4},\n month = {Apr},\n abstract = {Division of Neurosurgery, University of Texas, Medical Branch, Galveston\n\t77550. Short and long latency somatosensory evoked potentials (SEPs)\n\tto median nerve stimulation were recorded over the contralateral\n\themisphere. Simultaneously, signals evoked by the same stimulus were\n\tmonitored at Erb's point. Recordings were made during three conditions\n\twhich were presented in a different random order to each of the subjects\n\ttested. During the control condition the subjects were instructed\n\tto attend to and count the number of electrical pulses delivered\n\tto the median nerve of their right hand. During the two task conditions,\n\tin addition to the pulses, the subjects received stimulation on the\n\tdorsal surface of one of their hands. This consisted in drawing circles\n\tlightly for the duration of SEP recording using a cotton swab (Q-tip).\n\tDuring the trial, the Q-tip was momentarily withdrawn 15 to 20 times\n\tand the subject's task was to ignore the pulses, attend to this cutaneous\n\tstimulation and count the number of times the cutaneous stimulation\n\twas interrupted. SEPs to the pulse were significantly greater in\n\tamplitude when cutaneous stimulation was delivered to the same hand\n\tas the pulse (the right hand) than when it was delivered to the left\n\thand. This effect was confined to the long-latency SEPs and did not\n\tappear in either the Erb's point response or the short latency SEPs.\n\tThese data indicate that selective attention to peripheral stimulation\n\tis a relatively late process mediated by cortical mechanisms and\n\targue against the notion of early suppression of irrelevant stimulus\n\tchannels in subcortical centers or in the periphery.(ABSTRACT TRUNCATED\n\tAT 250 WORDS)}\n}","bibtype":"article","id":"Papanicolaou_etal89","journal":"Int J Neurosci","key":"Papanicolaou_etal89","month":"Apr","number":"3-4","pages":"277-82","title":"Selective attention effects on somatosensory evoked potentials","type":"article","volume":"45","year":"1989","bibbaseid":"papanicolaou-moore-gary-selectiveattentioneffectsonsomatosensoryevokedpotentials-1989","role":"author","urls":{},"downloads":0},"search_terms":["selective","attention","effects","somatosensory","evoked","potentials","papanicolaou","moore","gary"],"keywords":[],"authorIDs":[],"dataSources":["ErLXoH8mqSjESnrN5"]}