Atılgan A, Çiprut A. Effects of spatial separation with better- ear listening on N1-P2 complex.
Auris Nasus Larynx 2021;
48:1067-1073. [PMID:
33745789 DOI:
10.1016/j.anl.2021.03.005]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 02/16/2021] [Accepted: 03/02/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVE
The purpose of this study was to determine better- ear listening effect on spatial separation with the N1-P2 complex.
METHODS
Twenty individuals with normal hearing participated in this study. The speech stimulus /ba/ was presented in front of the participant (0°). Continuous Speech Noise (5 dB signal-to-noise ratio) was presented either in front of the participant (0°), left-side (-90°), or right-side (+90°). N1- P2 complex has been recorded in quiet and three noisy conditions.
RESULTS
There was a remarkable effect of noise direction on N1, P2 latencies. When the noise was separated from the stimulus, N1 and P2 latency increased in terms of when noise was co-located with the stimulus. There was no statistically significant difference in N1-P2 amplitudes between the stimulus-only and co-located condition. N1-P2 amplitude was increased when the noise came from the sides, according to the stimulus-only and co-located conditions.
CONCLUSION
These findings demonstrate that the latency shifts on N1-P2 complex explain cortical mechanisms of spatial separation in better-ear listening.
Collapse