PMID- 11516746
OWN - NLM
STAT- MEDLINE
DCOM- 20010906
LR  - 20190921
IS  - 1388-2457 (Print)
IS  - 1388-2457 (Linking)
VI  - 112
IP  - 7
DP  - 2001 Jul
TI  - Two evoked responses with different recovery functions in the primary 
      somatosensory cortex in humans.
PG  - 1334-42
AB  - OBJECTIVES: We investigated the recovery function of somatosensory evoked 
      magnetic cortical fields (SEFs) to confirm the temporal aspects of the 
      somatosensory process in humans. METHODS: SEFs were recorded following median 
      nerve electrical stimulation in 6 healthy subjects. Double stimulation, with 
      interstimulus intervals (ISIs) from 3 to 100 ms, was applied, and the SEF 
      components for the second stimulation were analyzed. In a supplementary 
      experiment, responses to single stimulations of various intensities from the 
      sensory threshold to the motor threshold were studied. RESULTS: The first SEF 
      component (1M) diminished when the ISI was less than 10 ms, while the second 
      component (2M) remained even when the ISI was 3 ms. The two components showed a 
      very similar attenuation with decrease of stimulus intensity. There was no 
      significant difference in dipole location between 1M and 2M in the primary 
      somatosensory cortex (SI). CONCLUSIONS: The results suggested that at least two 
      independent pathways with different recovery functions exist in a similar area in 
      the SI.
FAU - Hoshiyama, M
AU  - Hoshiyama M
AD  - Department of Integrative Physiology, National Institute for Physiological 
      Sciences, Myodaiji, Okazaki 444-8585, Japan. hosiyama@nips.ac.jp
FAU - Kakigi, R
AU  - Kakigi R
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PL  - Netherlands
TA  - Clin Neurophysiol
JT  - Clinical neurophysiology : official journal of the International Federation of 
      Clinical Neurophysiology
JID - 100883319
SB  - IM
MH  - Adult
MH  - Brain Mapping
MH  - Electric Stimulation
MH  - Evoked Potentials, Somatosensory/*physiology
MH  - Female
MH  - Humans
MH  - Magnetoencephalography
MH  - Male
MH  - Median Nerve/physiology
MH  - Neurons/physiology
MH  - Somatosensory Cortex/cytology/*physiology
EDAT- 2001/08/23 10:00
MHDA- 2001/09/08 10:01
CRDT- 2001/08/23 10:00
PHST- 2001/08/23 10:00 [pubmed]
PHST- 2001/09/08 10:01 [medline]
PHST- 2001/08/23 10:00 [entrez]
AID - S1388-2457(01)00564-8 [pii]
AID - 10.1016/s1388-2457(01)00564-8 [doi]
PST - ppublish
SO  - Clin Neurophysiol. 2001 Jul;112(7):1334-42. doi: 10.1016/s1388-2457(01)00564-8.