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Journal of Experimental Biology, Vol 101, Issue 1 83-92, Copyright © 1982 by Company of Biologists

JOURNAL ARTICLES

Noninvasive recording of the Mauthner neurone action potential in larval zebrafish

JI Prugh, CB Kimmel and WK Metcalfe

We describe the identification of Mauthner (M-) cell action potentials in an intact zebrafish larva, utilizing recording electrodes located outside the fish: 1. The externally recorded spike occurs at approximately the same time, and its waveform changes with recording site in the same way, as the extracellular M-spike recorded within the central nervous system. 2. The externally recorded M-spike may be readily distinguished from other forms of neural activity. 3. The M-spike can be identified in recordings from unrestrained larvae. This finding permits the direct study of M-cell function in the freely behaving animal.

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