[Role of phasic changes in sound signal in localization of auditory image].
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.
Al'tman
Ia A
IaA
I. P. Pavlov Institute of Physiology, Russian Acad. Sci., 199034, St. Petersburg, Nab. Makarova, 6, Russia.
Bekhterev
N N
NN
Vaĭtulevich
S F
SF
Nikitin
N I
NI
D000161:Acoustic Stimulation; D000328:Adult; D000818:Animals; D001303:Auditory Cortex / Q000502:physiology*; D002415:Cats; D004566:Electrodes; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D006801:Humans; D007245:Inferior Colliculi / Q000502:physiology*; D009474:Neurons / Q000502:physiology; D010897:Pitch Discrimination / Q000502:physiology*; D013017:Sound Localization / Q000502:physiology*; D013997:Time Factors
Rol' fazovykh izmeneniĭ v zvukovom signale pri lokalizatsii zvukovogo obraza.