Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 561784
Title Influence of stimulus intensity on the categories of single-unit responses recorded from olfactory bulb neurons in awake freely-breathing rabbits
Author(s) Chaput, M.A.; Lankheet, M.J.
Source Physiology and Behavior 40 (1987)4. - ISSN 0031-9384 - p. 453 - 462.
DOI https://doi.org/10.1016/0031-9384(87)90030-8
Publication type Refereed Article in a scientific journal
Publication year 1987
Keyword(s) Awake rabbit - Odor concentration - Olfaction - Olfactory bulb - Olfactory information coding - Single-unit activity
Abstract

This study analyzes the influence of increasing odor intensity on the single-unit activity of olfactory bulb neurons recorded in awake freely-breathing rabbits. Five odorants were delivered at four concentrations over a range of 2 log units. Inspiration-and expiration-related firing activities were analyzed separately to categorize the odor-evoked responses into excitation, suppression and no response. Increasing the odor concentration caused more neurons to show excitatory responses during the inspiratory phase of the respiratory cycle and/or suppressive responses during the expiratory phase. The highest concentration of each odor also caused several units to give suppressive responses during inspiratory phases or excitatory responses during expiratory phases. However, increasing odor concentration caused few responses (less than 2%) to change from excitation to suppression or vice versa. How these results relate to those from studies performed in anaesthetized animals and the implications of the results for olfactory coding will be discussed.

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