Abstract
Scalp somatosensory evoked potentials (SEPs) were recorded in 10 volunteers after median nerve stimulation, in four experimental conditions of hand movements performance/ideation, and compared with the baseline condition of full relaxation. The experimental conditions were (a) self-improvised hand-finger sequential movements; (b) the same movements according to a read sequence of numbers; (c) mental ideation of finger movements; and (d) passive displacement of fingers in complete relaxation. Latencies and amplitudes of the parietal (N20, P25, N33, and P45) and frontal peaks (P20-22, N30, and P40) were analyzed. Latencies did not vary in any of the paradigms. Among the parietal complexes, only the P25-N33 amplitude was significantly reduced in (a), (b), (c), and (d) and the N20-P25 was reduced in (a) and (d); among frontal waves, N30 and P40 were significantly reduced (2075%) in (a) and (b). Coronal electrodes showed amplitude decrements maximal at the frontal- rolandic positions contralateral to the stimulated side.
| Original language | English |
|---|---|
| Pages (from-to) | 191-202 |
| Number of pages | 12 |
| Journal | Muscle and Nerve |
| Volume | 19 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 1996 |
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Keywords
- finger movements
- median nerve stimulation
- sensory 'gating'
- SEPs
ASJC Scopus subject areas
- Clinical Neurology
- Neuroscience(all)
Cite this
Somatosensory evoked potentials during the ideation and execution of individual finger movements. / Rossini, Paolo M.; Caramia, Donatella; Bassetti, Maria A.; Pasqualetti, Patrizio; Tecchio, Franca; Bernardi, Giorgio.
In: Muscle and Nerve, Vol. 19, No. 2, 02.1996, p. 191-202.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Somatosensory evoked potentials during the ideation and execution of individual finger movements
AU - Rossini, Paolo M.
AU - Caramia, Donatella
AU - Bassetti, Maria A.
AU - Pasqualetti, Patrizio
AU - Tecchio, Franca
AU - Bernardi, Giorgio
PY - 1996/2
Y1 - 1996/2
N2 - Scalp somatosensory evoked potentials (SEPs) were recorded in 10 volunteers after median nerve stimulation, in four experimental conditions of hand movements performance/ideation, and compared with the baseline condition of full relaxation. The experimental conditions were (a) self-improvised hand-finger sequential movements; (b) the same movements according to a read sequence of numbers; (c) mental ideation of finger movements; and (d) passive displacement of fingers in complete relaxation. Latencies and amplitudes of the parietal (N20, P25, N33, and P45) and frontal peaks (P20-22, N30, and P40) were analyzed. Latencies did not vary in any of the paradigms. Among the parietal complexes, only the P25-N33 amplitude was significantly reduced in (a), (b), (c), and (d) and the N20-P25 was reduced in (a) and (d); among frontal waves, N30 and P40 were significantly reduced (2075%) in (a) and (b). Coronal electrodes showed amplitude decrements maximal at the frontal- rolandic positions contralateral to the stimulated side.
AB - Scalp somatosensory evoked potentials (SEPs) were recorded in 10 volunteers after median nerve stimulation, in four experimental conditions of hand movements performance/ideation, and compared with the baseline condition of full relaxation. The experimental conditions were (a) self-improvised hand-finger sequential movements; (b) the same movements according to a read sequence of numbers; (c) mental ideation of finger movements; and (d) passive displacement of fingers in complete relaxation. Latencies and amplitudes of the parietal (N20, P25, N33, and P45) and frontal peaks (P20-22, N30, and P40) were analyzed. Latencies did not vary in any of the paradigms. Among the parietal complexes, only the P25-N33 amplitude was significantly reduced in (a), (b), (c), and (d) and the N20-P25 was reduced in (a) and (d); among frontal waves, N30 and P40 were significantly reduced (2075%) in (a) and (b). Coronal electrodes showed amplitude decrements maximal at the frontal- rolandic positions contralateral to the stimulated side.
KW - finger movements
KW - median nerve stimulation
KW - sensory 'gating'
KW - SEPs
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UR - http://www.scopus.com/inward/citedby.url?scp=0030028727&partnerID=8YFLogxK
U2 - 10.1002/(SICI)1097-4598(199602)19:2<191::AID-MUS11>3.0.CO;2-Y
DO - 10.1002/(SICI)1097-4598(199602)19:2<191::AID-MUS11>3.0.CO;2-Y
M3 - Article
C2 - 8559169
AN - SCOPUS:0030028727
VL - 19
SP - 191
EP - 202
JO - Muscle and Nerve
JF - Muscle and Nerve
SN - 0148-639X
IS - 2
ER -