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Titolo:
AUGMENTATION OF POSTURAL MUSCLE TONE INDUCED BY THE STIMULATION OF THE DESCENDING FIBERS IN THE MIDLINE AREA OF THE CEREBELLAR WHITE-MATTERIN THE ACUTE DECEREBRATE CAT
Autore:
ASANOME M; MATSUYAMA K; MORI S;
Indirizzi:
NATL INST PHYSIOL SCI,DEPT BIOL CONTROL SYST OKAZAKI AICHI 444 JAPAN NATL INST PHYSIOL SCI,DEPT BIOL CONTROL SYST OKAZAKI AICHI 444 JAPAN ASAHIKAWA MED COLL,DEPT OTOLARYNGOL ASAHIKAWA HOKKAIDO 078851 JAPAN
Titolo Testata:
Neuroscience research
fascicolo: 3, volume: 30, anno: 1998,
pagine: 257 - 269
SICI:
0168-0102(1998)30:3<257:AOPMTI>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
STEM RETICULAR-FORMATION; BRAIN-STEM; CORTICOSPINAL NEURONS; NUCLEI; MONKEY; COLLATERALS; SUPPRESSION;
Keywords:
CEREBELLUM; FASTIGIAL NUCLEUS; FASTIGIOFUGAL FIBERS; HOOK BUNDLE; POSTURAL MUSCLE TONE; POSTURAL AUGMENTATION; DECEREBRATE CAT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
41
Recensione:
Indirizzi per estratti:
Citazione:
M. Asanome et al., "AUGMENTATION OF POSTURAL MUSCLE TONE INDUCED BY THE STIMULATION OF THE DESCENDING FIBERS IN THE MIDLINE AREA OF THE CEREBELLAR WHITE-MATTERIN THE ACUTE DECEREBRATE CAT", Neuroscience research, 30(3), 1998, pp. 257-269

Abstract

In a reflexively standing acute decerebrate cats, the cerebellar-white matter was systematically stimulated and the effects on the level ofpostural muscle tone were studied. A stimulating microelectrode was placed systematically at 0.1-0.5 mm increments from H + 2 to H - 2 at levels ranging from P7.0 to P8.0 rostrocaudally and mediolaterally fromLR0 to L1.5 or R1.5. Stimuli delivered to the restricted region of the cerebellar white matter along its midline resulted in simultaneous and bilateral augmentation of tonic activities in the neck, lumbar back, fore-and hindlimb extensor muscles along with increased levels in the forces exerted by each of the left and the right fore-and hindlimbs. Effective stimulus regions were located in the cerebellar white matter rostral and ventral to the most rostral part of the fastigial nucleus. Microinjection of a retrograde neural tracer, cholera-toxin b subunit conjugated horseradish peroxidase (CTb-HRP), into the lesioned effective stimulus sites resulted in a retrograde labeling of cells in thefastigial nuclei, bilaterally. All these results suggest that the augmentation of postural muscle tone was evoked by a selective activationof fastigiofugal fibers which course through the 'hook bundle'. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.

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Documento generato il 09/04/20 alle ore 06:49:29