Functional organization of a neural map in the cricket cercal sensory system

Modeling ion channels from the cricket cercal sensory system

We are interested in understanding how information about air-current dynamics is represented and processed in the primary sensory interneurons of the cricket cercal system. In this work, we develop channel models based on voltage–clamp data from Kloppenburg and H3 orner (J. Exp. Biol. 201 (1998) 2529), use channel ensembles to construct model neurons, and analyze the underlying mathematical str...

Neural mapping of direction and frequency in the cricket cercal sensory system.

Primary mechanosensory receptors and interneurons in the cricket cercal sensory system are sensitive to the direction and frequency of air current stimuli. Receptors innervating long mechanoreceptor hairs (>1000 microm) are most sensitive to low-frequency air currents (<150 Hz); receptors innervating medium-length hairs (900-500 microm) are most sensitive to higher frequency ranges (150-400 Hz)...

Effects of adaptation on neural coding by primary sensory interneurons in the cricket cercal system.

Methods of stochastic systems analysis were applied to examine the effect of adaptation on frequency encoding by two functionally identical primary interneurons of the cricket cercal system. Stimulus reconstructions were obtained from a linear filtering transformation of spike trains elicited in response to bursts of broadband white noise air current stimuli (5-400 Hz). Each linear reconstructi...

Neurospecificity in the cricket cercal system.

Studies of neurospecificity in the cricket cercal sensory system are reviewed and a decade of experimentation is examined in the light of recently obtained anatomical data. The nearly complete description of the anatomy indicates that the excitatory receptive fields of directionally-selective interneurones are a joint function of an orderly afferent projection and the dendritic structure of the...

Collaborative Research: A Dynamic Atlas of the Cricket Cercal Sensory System