@article {53567, title = {The coding of airborne-sound and vibration signals in bimodal ventral-cord neurons of the grasshopper Tettigonia cantans}, journal = {Journal of comparative physiology}, volume = {139}, year = {1980}, pages = {267{\textendash}275}, abstract = {

In grasshoppers, the auditory and vibra- tional senses converge on the same ventral-cord neurons. All neurons in the ventral cord that discharge impulses in response to either airborne-sound or vi- bration stimuli also receive synaptic inputs from the other sensory system. The latter elicit either sub- threshold excitation or inhibition.

The coding of the conspecific song in the responses of most ventral-cord neurons of Tettigonia cantans is considerably improved when the stimulus consists not of simulated natural sounds alone, but of such
sounds together with either maintained vibration or vibration matched to the temporal structure of the song.

Stridulating tettigoniids produce both airborne and substrate-conducted sound. Thus the perception of airborne sound and vibration, and their simulta- neous processing in individual ventral-cord neurons, may be of fundamental importance - not only in localizing a nearby sound source, but also in facilitat- ing the recognition of conspecific signals.

}, author = {Kalmring, Klaus and K{\"u}hne, Roland} } @article {47589, title = {Processing of vibratory and acoustic signals by ventral cord neurones in the cricket Gryllus campestris}, journal = {Journal of Insect Physiology}, volume = {30}, year = {1984}, month = {Jan-01-1984}, pages = {575 - 585}, abstract = {

The responses of single vibratory receptors and ascending ventral cord interneurones were studied extracellularly in Gryllus campestris L. The physiology of the vibration receptors resembled those found in tettigoniids and locusts. The frequency responses of the subgenual receptors provide two possible cues for central frequency discrimination: differences in mean tuning between groups of receptors in the different leg pairs and a range of receptors tuned to different frequencies within one subgenual organ.

Most of the ascending vibratory interneurones were highly sensitive in either the low or high frequency range. Broadbanded neurones were less sensitive. The characteristic sensitivity peaks of these units are due mainly to receptor inputs from a particular leg pair, although most central neurones receive inputs from all 6 legs. Only one neurone type, TN1 received excitatory inputs from both auditory and vibratory receptors; its responses were greatly enhanced by the simultaneous presentation of both stimulus modes. The responses to sound stimuli of AN2, on the other hand, were inhibited by vibration. No other auditory interneurones investigated were influenced by inputs from vibration receptors. Central processing of vibratory information in the cricket is compared with that of tettigoniids and locusts.

}, keywords = {central coprocessing, cricket, interneurone, sound, vibration}, issn = {00221910}, doi = {10.1016/0022-1910(84)90086-6}, url = {http://linkinghub.elsevier.com/retrieve/pii/0022191084900866}, author = {K{\"u}hne, Roland and Silver, Susan and Lewis, Brian} }