Detection of transient synchrony across oscillating receptors by the central electrosensory system of mormyrid fish
- Washington University in St. Louis, United States
Figures
Figure 1
The central electrosensory system detects transient synchrony among oscillating receptors.
50 µm horizontal sections of the midbrain of P. tenuicauda (A), P. microphthalmus (B), and B. niger (C). The midbrain exterolateral nucleus (EL) in P. tenuicauda is small and undifferentiated; in …
Figure 2
Evoked potentials in the midbrain are blocked by a corollary discharge of the EOD motor command.
Effect of stimulus delay with respect to the spinal EOD motor command on the amplitude of evoked potentials in P. tenuicauda (A), P. microphthalmus (B) and B. niger (C). Evoked potentials in P. …
Figure 3
Frequency content relates to the duration of communication signals in pulse-type mormyrids.
(A) Power spectra and (B) representative waveforms of electric organ discharges (EODs) of the three species tested.
Figure 4
Midbrain frequency sensitivity matches EOD frequency content in species with spiking receptors, but not in species with oscillating receptors.
(A) Representative mean evoked potentials (n = 10 traces) from the EL of P. tenuicauda (black), ELa of P. microphthalmus (blue), and ELa of B. niger (red) in response to single-cycle bipolar …
