Role of phasic changes in sound signal in localization of auditory image
Al'tman, I.A.; Bekhterev, N.N.; Vaĭtulevich, S.F.; Nikitin, N.I.
Rossiiskii Fiziologicheskii Zhurnal Imeni I.M. Sechenova 89(3): 271-279
2003
ISSN/ISBN: 0869-8139 PMID: 12968520 Document Number: 556064
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.