Feedforward somatosensory inhibition is normal in cervical dystonia
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Feedforward somatosensory inhibition is normal in cervical dystonia. / Ferrè, Elisa R; Ganos, Christos; Bhatia, Kailash P; Haggard, Patrick.
In: PARKINSONISM RELAT D, Vol. 21, No. 3, 01.03.2015, p. 266-70.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Feedforward somatosensory inhibition is normal in cervical dystonia
AU - Ferrè, Elisa R
AU - Ganos, Christos
AU - Bhatia, Kailash P
AU - Haggard, Patrick
N1 - Copyright © 2015 Elsevier Ltd. All rights reserved.
PY - 2015/3/1
Y1 - 2015/3/1
N2 - BACKGROUND: Insufficient cortical inhibition is a key pathophysiological finding in dystonia. Subliminal sensory stimuli were reported to transiently inhibit somatosensory processing. Here we investigated whether such subliminal feedforward inhibition is reduced in patients with cervical dystonia.METHODS: Sixteen cervical dystonia patients and 16 matched healthy controls performed a somatosensory detection task. We measured the drop in sensitivity to detect a threshold-level digital nerve shock when it was preceded by a subliminal conditioning shock, compared to when it was not.RESULTS: Subliminal conditioning shocks reduced sensitivity to threshold stimuli to a similar extent in both patients and controls, suggesting that somatosensory subliminal feedforward inhibition is normal in cervical dystonia.CONCLUSION: Somatosensory feedforward inhibition was normal in this group of cervical dystonia patients. Our results qualify previous concepts of a general dystonic deficit in sensorimotor inhibitory processing.
AB - BACKGROUND: Insufficient cortical inhibition is a key pathophysiological finding in dystonia. Subliminal sensory stimuli were reported to transiently inhibit somatosensory processing. Here we investigated whether such subliminal feedforward inhibition is reduced in patients with cervical dystonia.METHODS: Sixteen cervical dystonia patients and 16 matched healthy controls performed a somatosensory detection task. We measured the drop in sensitivity to detect a threshold-level digital nerve shock when it was preceded by a subliminal conditioning shock, compared to when it was not.RESULTS: Subliminal conditioning shocks reduced sensitivity to threshold stimuli to a similar extent in both patients and controls, suggesting that somatosensory subliminal feedforward inhibition is normal in cervical dystonia.CONCLUSION: Somatosensory feedforward inhibition was normal in this group of cervical dystonia patients. Our results qualify previous concepts of a general dystonic deficit in sensorimotor inhibitory processing.
U2 - 10.1016/j.parkreldis.2014.12.026
DO - 10.1016/j.parkreldis.2014.12.026
M3 - SCORING: Journal article
C2 - 25601129
VL - 21
SP - 266
EP - 270
JO - PARKINSONISM RELAT D
JF - PARKINSONISM RELAT D
SN - 1353-8020
IS - 3
ER -