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Updated: Aug 18, 2026

Functional Imaging of Auditory Cortex in Adult Cats using High-field fMRI
Published on: February 19, 2014
[Role of phasic changes in sound signal in localization of auditory image]
Ia A Al'tman1, N N Bekhterev, S F Vaĭtulevich
1I. P. Pavlov Institute of Physiology, Russian Acad. Sci., 199034, St. Petersburg, Nab. Makarova, 6, Russia.
Abstract:
The work presents experimental data on certain changes in electrical responses of the auditory system's midbrain centre in a contraphasic binaural presentation of sound impulse series. Neuronal cortical activity is selective in respect to dynamic interaural changes of signals' phasic spectre which may serve as a basis for the mechanisms of localising a moving source of sound. Human auditory evoked potentials reveal a manifestation of memorizing the auditory image movement direction as shown by appearance of stimuli deviant from standard mismatch negativity.
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