Varying effect of noise on sound onset and acoustic change evoked auditory cortical N1 responses evoked by a vowel-vowel stimulus

YARALI M.

INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY, vol.152, pp.36-43, 2020 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 152
  • Publication Date: 2020
  • Doi Number: 10.1016/j.ijpsycho.2020.04.010
  • Journal Name: INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Social Sciences Citation Index (SSCI), Scopus, Academic Search Premier, IBZ Online, PASCAL, BIOSIS, EMBASE, MEDLINE, Psycinfo
  • Page Numbers: pp.36-43
  • Keywords: Acoustic change, Auditory evoked cortical N1, Formant change, Noise, Onset response, EVENT-RELATED POTENTIALS, SPEECH, PERCEPTION
  • Hacettepe University Affiliated: Yes

Abstract

Introduction: According to previous studies noise causes prolonged latencies and decreased amplitudes in acoustic change evoked cortical responses. Particularly for a consonant-vowel stimulus, speech shaped noise leads to more pronounced changes on onset evoked response than acoustic change evoked response. Reasoning that this may be related to the spectral characteristics of the stimuli and the noise, in the current study a vowel-vowel stimulus (/ui/) was presented in white noise during cortical response recordings. The hypothesis is that the effect of noise will be higher on acoustic change N1 compared to onset N1 due to the masking effects on formant transitions.