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Titolo:
Representation of nociceptive stimuli in primary sensory cortex
Autore:
Berman, HH; Kim, KHS; Talati, A; Hirsch, J;
Indirizzi:
Mem Sloan Kettering Canc Ctr, Dept Neurol, New York, NY 10021 USA Mem Sloan Kettering Canc Ctr New York NY USA 10021 New York, NY 10021 USA Cornell Univ, Coll Med, Dept Pharmacol, New York, NY 10021 USA Cornell Univ New York NY USA 10021 Dept Pharmacol, New York, NY 10021 USA Cornell Univ, Coll Med, Dept Neurosci, New York, NY 10021 USA Cornell Univ New York NY USA 10021 Dept Neurosci, New York, NY 10021 USA
Titolo Testata:
NEUROREPORT
fascicolo: 18, volume: 9, anno: 1998,
pagine: 4179 - 4187
SICI:
0959-4965(199812)9:18<4179:RONSIP>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN SCALP; RESPONSES; SKIN; PAIN;
Keywords:
functional magnetic resonance imaging (fMRI); nociception; somatosensory cortex (SI); somatotopy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Hirsch, J Mem1Sloan Kettering Canc Ctr, Dept Neurol, 1275 York Ave, New York, NY 1002 Mem Sloan Kettering Canc Ctr 1275 York Ave New York NY USA 10021
Citazione:
H.H. Berman et al., "Representation of nociceptive stimuli in primary sensory cortex", NEUROREPORT, 9(18), 1998, pp. 4179-4187

Abstract

USING fMRI, we observed cortical activity associated with nociceptive hot and cold sensations applied to hand and foot that are not spatially restricted to the corresponding regions of the primary somatosensory cortex (SI). Hot (55-57 degrees C) and cold (0-2 degrees C) tactile stimuli were appliedseparately to the right hand and foot of eight right-handed subjects. Although somatotopic mapping of hand and foot was observed as expected based onthe Penfield homunculus, activations associated with hot during both hand and foot stimulation and subsequently, cold, activated regions unique to each thermal modality irrespective of the body part. This distributed system for thermal information is present at both nociceptive and more neutral thermal intensities (i.e. warm and cool sensations) indicating the presence ofdistributed sensory processing associated with thermal-related sensations in human primary sensorimotor cortex. (C) 1998 Lippincott Williams & Wilkins.

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Documento generato il 02/04/20 alle ore 06:24:30