Phase-locking behavior in a high-frequency gymnotiform weakly electric fish, Adontosternarchus

摘要: An apteronotid weakly electric fish, Adontosternarchus, emits high-frequency organ discharges (700–1500 Hz) which are stable in frequency if no other fish or artificial signals present. When encountered with an signal of higher than the fish’s discharge, raised its discharge and eventually matched own to that signal. At this moment, phase locking was observed, where timing precisely stabilized at a particular over long period time (up minutes) microsecond precision. Analyses phase-locking behaviors revealed values stimulus stabilizes (called lock-in phases) have three populations between −180° +180°. During rise behavior, electrosensory system is exposed mixture feedback from Since modulates both amplitude phase, we explored whether information participated driving using numerical model. The model incorporates only well predicted phases. removed stimulus, behavior still observed. These results suggest Adontosternarchus requires but not available stimulus.