Auditory responses in the barn owl's nucleus laminaris to clicks: impulse response and signal analysis of neurophonic potential.

ABSTRACT: We used acoustic clicks to study the impulse response of the neurophonic potential in the barn owl's nucleus laminaris. Clicks evoked a complex oscillatory neural response with a component that reflected the best frequency measured with tonal stimuli. The envelope of this component was obtained from the analytic signal created using the Hilbert transform. The time courses of the envelope and carrier waveforms were characterized by fitting them with filters. The envelope was better fitted with a Gaussian than with the envelope of a gamma-tone function. The carrier was better fitted with a frequency glide than with a constant instantaneous frequency. The change of the instantaneous frequency with time was better fitted with a linear fit than with a saturating nonlinearity. Frequency glides h

SUBMITTER: Wagner H 

PROVIDER: S-EPMC2724332 | biostudies-literature | 2009 Aug

REPOSITORIES: biostudies-literature