Physiological, morphological, and cytochemical characteristics of a layer 1 neuron in cat striate cortex.
J Comp Neurol
; 282(3): 404-14, 1989 Apr 15.
Article
em En
| MEDLINE
| ID: mdl-2715389
ABSTRACT
We have recorded from a small neuron in layer 1 of the striate visual cortex in a 34-day-old kitten. It had a simple, orientation-selective receptive field that was nondirectional and showed length summation. The neuron was injected intracellularly with horseradish peroxidase. Computer-aided reconstruction revealed that it had a dense axonal plexus confined to layer 1, elongated in the anteroposterior dimension. By means of an antibody directed against a GABA-like antigen, and postembedding immunocytohemistry, the neuron was found to be strongly immunoreactive. The main input to soma and dendrites of the neuron was from synapses that were not GABA-L-immunoreactive, and probably originated from pyramidal cells. The axon of the cell formed synapses on dendritic shafts and spines, whose most likely sources were the apical tufts of pyramidal cell dendrites. These data suggest that such neurons may be involved in local circuits that contribute to the formation of pyramidal cell receptive fields.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Córtex Visual
/
Neurônios Aferentes
Limite:
Animals
Idioma:
En
Ano de publicação:
1989
Tipo de documento:
Article