Temporal Sound Processing by Cochlear Nucleus Octopus Neurons Export

@incollection{citeulike:3781077, abstract = {The human auditory system excels in the detection of signals in background noise. We evaluate the principles of robust processing with a detailed inner ear model and a model of octopus neurons in the cochlear nucleus. These neurons reject steady-state excitation and fire on signal onsets with extremely high temporal precision. Spike-triggered reverse-correlation analysis revealed that octopus neurons fire preferentially if many coincident spikes follow a short interval of relative low excitation. The frequency spectrum of the reverse-correlation revealed that octopus neurons perform a band-pass analysis of the incoming signal, with the pass-band ranging from about 110 to 650 Hz. The low-frequency slope was approximately 6 dB/oct, which indicates that octopus neurons process the first derivative of the input signal. This mechanism not only removes steady-state activity, which accentuates onsets, but also enhances amplitude modulation in the frequency region predominant in speech.}, author = {Hemmert, Werner and Holmberg, Marcus and Ramacher, Ulrich}, citeulike-article-id = {3781077}, citeulike-linkout-0 = {http://dx.doi.org/10.1007/11550822_91}, citeulike-linkout-1 = {http://www.springerlink.com/content/7d78mmdgw2p92hke}, doi = {10.1007/11550822_91}, journal = {Artificial Neural Networks: Biological Inspirations – ICANN 2005}, keywords = {cn, octopus, processing, temporal}, pages = {583--588}, posted-at = {2009-11-05 22:53:42}, priority = {2}, title = {Temporal Sound Processing by Cochlear Nucleus Octopus Neurons}, url = {http://dx.doi.org/10.1007/11550822_91}, year = {2005} }

TY - CHAP ID - citeulike:3781077 L3 - citeulike-article-id:3781077 N2 - The human auditory system excels in the detection of signals in background noise. We evaluate the principles of robust processing with a detailed inner ear model and a model of octopus neurons in the cochlear nucleus. These neurons reject steady-state excitation and fire on signal onsets with extremely high temporal precision. Spike-triggered reverse-correlation analysis revealed that octopus neurons fire preferentially if many coincident spikes follow a short interval of relative low excitation. The frequency spectrum of the reverse-correlation revealed that octopus neurons perform a band-pass analysis of the incoming signal, with the pass-band ranging from about 110 to 650 Hz. The low-frequency slope was approximately 6 dB/oct, which indicates that octopus neurons process the first derivative of the input signal. This mechanism not only removes steady-state activity, which accentuates onsets, but also enhances amplitude modulation in the frequency region predominant in speech. JF - Artificial Neural Networks: Biological Inspirations – ICANN 2005 EP - 588 TI - Temporal Sound Processing by Cochlear Nucleus Octopus Neurons SP - 583 KW - cn KW - octopus KW - processing KW - temporal AU - Hemmert, Werner AU - Holmberg, Marcus AU - Ramacher, Ulrich PY - 2005/// UR - http://dx.doi.org/10.1007/11550822_91 ER -