Neural coding in antennal olfactory cells of tsetse flies (Glossina spp.)

K.E Voskamp*, N Noorman, H.A K Mastebroek, N.E.G. van Schoot, C.J den Otter

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

    3 Citaten (Scopus)

    Samenvatting

    Spike trains from individual antennal olfactory cells of tsetse flies (Glossina spp.) obtained during steady-state conditions (spontaneous as well as during stimulation with 1-octen-3-ol) and dynamic stimulation with repetitive pulses of 1-octen-3-ol were investigated by studying the spike frequency and the temporal structure of the trains. In general, stimulation changes the intensity of the spike activity but leaves the underlying stochastic structure unaffected. This structure turns out to be a renewal process. The only independently varying parameter in this process is the mean interspike interval length, suggesting that olfactory cells of tsetse flies may transmit information via a frequency coding. In spike records with high firing rates, however, the stationary records had significant negative first-order serial correlation coefficients and were non-renewal. Some cells in this study were capable of precisely encoding the onset of the odour pulses at frequencies up to at least 3 Hz. Cells with a rapid return to pre-stimulus activity at the end of stimulation responded more adequately to pulsed stimuli than cells with a long increased spike frequency. While short-firing cells process information via a frequency code, long-firing cells responded with two distinctive phases: a phasic, non-renewal response and a tonic, renewal response which may function as a memory of previous stimulations.

    Originele taal-2English
    Pagina's (van-tot)521-530
    Aantal pagina's10
    TijdschriftChemical senses
    Volume23
    Nummer van het tijdschrift5
    DOI's
    StatusPublished - okt.-1998

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