词汇 | excitatory |
释义 | BETA Examples of excitatoryexcitatory isn’t in the Cambridge Dictionary yet. You can help! Increasing the size of a spot within the receptive-field center of the relay cell will thus result both in enhanced excitatory and inhibitory input. This excitatory bias is an order parameter for the induction of state transitions in cortical itinerancy. This leads to a reduction of synaptic efficacy at excitatory and inhibitory inputs through the activation of presynaptic metabotropic glutamate receptors. Downregulation might result in a decrease in glutamate uptake and a subsequent increase in excitatory synaptic transmission. But experience might also strengthen the local excitatory interactions, leading to a sharpening of the kernel. Excitatory and inhibitory nodes were located randomly with equal probability in the cortical sheet, although the input sheet contained only excitatory nodes. The present study, therefore, pointed out a marked variation also in populations of thalamic excitatory projection neurons. A simple cascade model of excitatory feedforward and inhibitory feedback synapses had been suggested to underlie these observations. The excitatory responses we observed mostly occurred when cells showed firing response behavior of the tonic mode. This neuron showed a two-dimensional excitatory peak for optimal disparities. Presumably, it must reflect the relative effectiveness of excitatory and inhibitory summations within the dendrites of wide-field movement detector neurones within the crab optic tract. Negative values indicate a change in the sign of the response, that is, from being inhibitory to excitatory or from being excitatory to being inhibitory. Comparing linearity functions between these neurons indicated multiple excitatory inputs to each type of horizontal cells. Each figure shows the effect of excitatory (feedback) input alone, inhibitory input alone, and the net effect of combined excitation and inhibition. These channels translate the graded, electrical responses of photoreceptors and bipolar cells into graded, calcium-dependent release of the excitatory neurotransmitter, glutamate. Some stimulus paradigms show no evidence of a decline in excitatory contextual modulation with distance. |
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