Nonlinear signal transmission between second- and third-order neurons of cockroach ocelli.
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چکیده
منابع مشابه
Nonlinear signal transmission between second- and third-order neurons of cockroach ocelli
Transfer characteristics of the synapse made from second- to third-order neurons of cockroach ocelli were studied using simultaneous microelectrode penetrations and the application of tetrodotoxin. Potential changes were evoked in second-order neurons by either an extrinsic current or a sinusoidally modulated light. The synapse had a low-pass filter characteristic with a cutoff frequency of 25-...
متن کاملSynaptic transmission between second- and third-order neurones of cockroach ocelli.
The insect ocellus contains a large number of photoreceptors which converge on a small number of large second-order neurones, called L neurones. The L neurones exit from the ocellus and project into the ocellar tract of the brain, where they make synapses with third-order neurones (reviewed by Goodman, 1981). Response characteristics of L neurones have been well documented (Goodman, 1981; Mizun...
متن کاملGain Control of Synaptic Transfer from Second- to Third-order Neurons of Cockroach Ocelli
A B S T RA C T Synaptic transmission from secondto third-order neurons of cockroach ocelli occurs in an exponentially rising part of the overall sigmoidal characteristic curve relating preand postsynaptic voltage. Because of the nonlinear nature of the synapse, linear responses of second-order neurons to changes in light intensity are half-wave rectified, i.e., the response to a decrement in li...
متن کاملGain control of synaptic transfer from second- to third-order neurons of cockroach ocelli
Synaptic transmission from second- to third-order neurons of cockroach ocelli occurs in an exponentially rising part of the overall sigmoidal characteristic curve relating pre- and postsynaptic voltage. Because of the nonlinear nature of the synapse, linear responses of second-order neurons to changes in ligh intensity are half-wave rectified, i.e., the response to a decrement in light is ampli...
متن کاملGain Control of Synaptic Transfer from Second- to Third-order Neurons of Cockroach Ocelli
A B S T RA C T Synaptic transmission from secondto third-order neurons of cockroach ocelli occurs in an exponentially rising part of the overall sigmoidal characteristic curve relating preand postsynaptic voltage. Because of the nonlinear nature of the synapse, linear responses of second-order neurons to changes in light intensity are half-wave rectified, i.e., the response to a decrement in li...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1990
ISSN: 0022-1295,1540-7748
DOI: 10.1085/jgp.95.2.297