Excitatory postsynaptic potential evoked by stimulation of the ventrolateral region of the cerebellum in crucian carp Mauthner cell / 生理学报
Acta Physiologica Sinica
;
(6): 459-463, 2003.
Artigo
em Chinês
| WPRIM
| ID: wpr-290943
ABSTRACT
In the present experiments, the characteristics of the electrical responses to stimulation of the cerebellum in crucian carp Mauthner cell were explored with microeletrode intracellular recording technique. A composite excitatory postsynaptic potential (cerebellum-evoked EPSP) could be induced from the soma, the ventral dendrite and the proximal end of the lateral dendrite in crucian carp Mauthner cell (M-cell) on either side by stimulation of the ventrolateral region of the cerebellum. The cerebellum-evoked EPSP presented characteristics of relatively short latency (0.63+/-0.09 ms), longer duration (5.49+/-1.13 ms), graded amplitude and dependence on stimulation frequency. Stimulation of the cerebellum with higher intensity always activated the M-cell orthodromically. Multiple intracellular recordings showed that the cerebellum-evoked EPSP originated in the distal end of the ventral dendrite. The results suggest that the cerebellum-M-cell pathway is probably composed of a group of neuron chains with different numbers of synaptic relays projecting to the distal end of the ventral dendrite in order of length of the chains.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fisiologia
/
Sinapses
/
Carpas
/
Cerebelo
/
Transmissão Sináptica
/
Potenciais Pós-Sinápticos Excitadores
/
Dendritos
/
Estimulação Elétrica
/
Neurônios
Limite:
Animais
Idioma:
Chinês
Revista:
Acta Physiologica Sinica
Ano de publicação:
2003
Tipo de documento:
Artigo
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