Related Experiment Video
Updated: Dec 13, 2025
Infant Auditory Processing and Event-related Brain Oscillations
Published on: July 1, 2015
Comparison of sound location variations in free and reverberant fields: An event-related potential study
Xiaoli Zhong1, Zihui Yang1, Shengfeng Yu1
1School of Physics and Optoelectronics, South China University of Technology, Guangzhou, 510641, People's Republic of China.
Abstract:
This study compares event-related potentials (ERPs) elicited by variations of sound location in free and reverberant fields. The virtual sound sources located at azimuths 0°-40° were synthesized with head-related transfer functions and binaural room impulse responses for free and reverberant fields, respectively. The sound stimulus at 0° was assigned as standard in the oddball paradigm. Results show that the P3 amplitude is larger in the free field and acoustical conditions have no significant effect on the amplitudes of N2 and mismatch negativity. Moreover, a linear relationship between sound angle and amplitude of ERP components is observed.
Related Concept Videos
01:21Perceiving Loudness, Pitch, and Location
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
01:06Echo
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...