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High resolution spatio-temporal analysis of aquatic chemical signals using microelectrochemical electrodes
Authors:Moore  Paul A; Gerhardt  Greg A; Atema  Jelle
Abstract:Detailed understanding of chemoreceptor cell transduction andfiltering depends on precise control and thus measurement ofthe chemical stimulus. In contrast to vision and hearing, accuratestimulus measurement in chemoreception has not been possibleat biologically relevant spatial and temporal scales. In thispaper we introduce a new high-speed (200 hz) electrochemicalmethod for the direct measurement of odor signals at biologicallyrelevant space scales (10-100 µm). We tested this systemin three applications: (i) temporal and spatial features ofodor plumes, (ii) stimulus calibrations in physiological recordingchambers and (iii) boundary layer diffusion measurements withinreceptor structures.
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