Fig. 2: Phase locking to the stimulus envelope was highest in off-frequency channels at higher sound levels.
From: Notched noise reveals differential improvement in the neural representation of the sound envelope
a Firing rate as a function of CF for a population of modeled fibers (n = 25; one at each CF), in response to a 4-kHz centered SAM tone at 20 dB SPL (squares and solid line) and at 65 dB SPL (circles and dashed line). b VS as a function of CF for the same two stimuli as in panel (a). The legend of panel (a) applies. Only significant VS values were plotted with a marker. The individual data points are shown next to the respective markers and error bars. AN auditory nerve, CF characteristic frequency, SAM sinusoidally amplitude modulated, SPL sound-pressure level, VS vector strength.
