DESCENDING PATHWAYS MEDIATING DISYNAPTIC EXCITATION OF DORSAL NECK MOTONEURONS IN THE CAT - FACILITATORY INTERACTIONS

被引：15

作者：

ALSTERMARK, B ^{[1
]}

PINTER, MJ ^{[1
]}

SASAKI, S ^{[1
]}

机构：

[1] UMEA UNIV,DEPT PHYSIOL,S-90187 UMEA,SWEDEN

来源：

NEUROSCIENCE RESEARCH | 1992年 / 15卷 / 1-2期

关键词：

DESCENDING CONVERGENCE; PYRAMID; TECTUM; TEGMENTUM; RETICULOSPINAL NEURONS; NECK MOTONEURONS;

D O I：

10.1016/0168-0102(92)90015-5

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Facilitatory interactions between disynaptic EPSPs evoked from the contralateral tectum, ipsilateral tegmentum and contra- and/or ipsilateral pyramid have been investigated in dorsal neck motoneurones of the cat. Monosynaptic convergence on common intercalated neurones was found from ipsi- and contralateral pyramidal, contralateral tectal and ipsilateral tegmental fibres. In addition, disynaptic facilitation was observed from ipsilateral pyramidal fibres on disynaptic contralateral pyramidal EPSPs. Transection of cortico-fugal fibres in the pyramid showed that the location of the interactions occurred in the lower brain stem, suggesting that reticulospinal neurones are

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页码：32 / 41

页数：10

相关论文

共 29 条

[1] CONVERGENCE ON RETICULOSPINAL NEURONS MEDIATING CONTRALATERAL PYRAMIDAL DISYNAPTIC EPSPS TO NECK MOTONEURONS [J].

ALSTERMARK, B ;

PINTER, M ;

SASAKI, S .

BRAIN RESEARCH, 1983, 259 (01) :151-154

[2] LONG C3-C5 PROPRIOSPINAL NEURONS IN THE CAT [J].

ALSTERMARK, B ;

LUNDBERG, A ;

PINTER, M ;

SASAKI, S .

BRAIN RESEARCH, 1987, 404 (1-2) :382-388

[3] PYRAMIDAL EFFECTS IN DORSAL NECK MOTONEURONES OF THE CAT [J].

ALSTERMARK, B ;

PINTER, MJ ;

SASAKI, S .

JOURNAL OF PHYSIOLOGY-LONDON, 1985, 363 (JUN) :287-302

[4] SUBPOPULATIONS AND FUNCTIONS OF LONG C3-C5 PROPRIOSPINAL NEURONS [J].

ALSTERMARK, B ;

LUNDBERG, A ;

PINTER, M ;

SASAKI, S .

BRAIN RESEARCH, 1987, 404 (1-2) :395-400

[5] MOTOR RECOVERY AFTER SERIAL SPINAL-CORD LESIONS OF DEFINED DESCENDING PATHWAYS IN CATS [J].

ALSTERMARK, B ;

LUNDBERG, A ;

PETTERSSON, LG ;

TANTISIRA, B ;

WALKOWSKA, M .

NEUROSCIENCE RESEARCH, 1987, 5 (01) :68-73

[6] INTEGRATION IN DESCENDING MOTOR PATHWAYS CONTROLLING THE FORELIMB IN THE CAT .17. AXONAL PROJECTION AND TERMINATION OF C3-C4 PROPRIOSPINAL NEURONS IN THE C6-TH1 SEGMENTS [J].

ALSTERMARK, B ;

KUMMEL, H ;

PINTER, MJ ;

TANTISIRA, B .

EXPERIMENTAL BRAIN RESEARCH, 1990, 81 (03) :447-461

[7]

ALSTERMARK B, 1990, EXP BRAIN RES, V80, P1

[8] INTEGRATION IN DESCENDING MOTOR PATHWAYS CONTROLLING THE FORELIMB IN THE CAT .9. DIFFERENTIAL BEHAVIORAL DEFECTS AFTER SPINAL-CORD LESIONS INTERRUPTING DEFINED PATHWAYS FROM HIGHER CENTERS TO MOTO-NEURONS [J].

ALSTERMARK, B ;

LUNDBERG, A ;

NORRSELL, U ;

SYBIRSKA, E .

EXPERIMENTAL BRAIN RESEARCH, 1981, 42 (3-4) :299-318

[9] TRANSNEURONAL TRANSPORT OF WHEAT-GERM-AGGLUTININ CONJUGATED HORSERADISH-PEROXIDASE INTO LAST ORDER SPINAL INTERNEURONS PROJECTING TO ACROMIODELTOIDEUS AND SPINODELTOIDEUS MOTONEURONS IN THE CAT .2. DIFFERENTIAL LABELING OF INTERNEURONS DEPENDING ON MOVEMENT TYPE [J].

ALSTERMARK, B ;

KUMMEL, H .

EXPERIMENTAL BRAIN RESEARCH, 1990, 80 (01) :96-103

[10] TRANS-NEURONAL LABELING OF NEURONS PROJECTING TO FORELIMB MOTONEURONS IN CATS PERFORMING DIFFERENT MOVEMENTS [J].

ALSTERMARK, B ;

KUMMEL, H .

BRAIN RESEARCH, 1986, 376 (02) :387-391