PMID: 7083017Apr 22, 1982Paper

Neural basis of wind-receptive fields of cockroach giant interneurons

Brain Research
D L Daley

Abstract

The pattern of connectivity between the nine most prominent columns of sensory hairs of one cercus and ipsilateral giant interneurons (GIs) 1 and 2 of the cockroach Periplaneta americana was studied using intracellular methods. GI 1, a somewhat directionally selective interneuron receives excitatory synaptic input from all hair columns of the ipsilateral cercus. GI 2, an omni-directional cell, also receives synaptic input from all ipsilateral hair columns. However, for 2 of the 9 columns of hairs the response in GI 2 is greater than in GI 1. This difference in response magnitude represents a real difference in the functional strength of connection and not the number of synapsing afferents since the response in both GI 1 and 2 declines stepwise as the number of hairs tested was reduced one-by-one. Thus, the difference in the shapes of the wind-receptive fields of GI 1 and 2 can be explained by differences in the functional strength of connection of certain identified afferents.

Citations

Apr 1, 1989·Journal of Comparative Physiology. A, Sensory, Neural, and Behavioral Physiology·J M Camhi, A Levy

Related Concepts

Air Movements
Polyphagidae
Somatosensory Evoked Potentials
Interneurons
Ambidexterity
Meissner's Corpuscle
Neurons
Periplaneta americana
Synapses
Environmental Wind

Related Feeds

Barrel cortex

Here is the latest research on barrel cortex, a region of somatosensory and motor corticies in the brain, which are used by animals that rely on whiskers for world exploration.