6533b827fe1ef96bd128722f
RESEARCH PRODUCT
Are different kinds of acoustic features processed differently for speech and non-speech sounds?
T IlvonenMari TervaniemiMari TervaniemiMaria JaramilloTeija KujalaPaavo AlkuKimmo Alhosubject
AdultMalemedicine.medical_specialtySpeech perceptionCognitive NeuroscienceMismatch negativityExperimental and Cognitive PsychologyStimulus (physiology)Audiologybehavioral disciplines and activities050105 experimental psychology03 medical and health sciencesBehavioral NeuroscienceP3aDiscrimination Psychological0302 clinical medicineEvent-related potentialVowelotorhinolaryngologic diseasesmedicineHumansAttention0501 psychology and cognitive sciencesskin and connective tissue diseasesEvoked PotentialsCommunicationbusiness.industrySensory memory05 social sciencesElectroencephalographySpeech processingElectrooculographyAcoustic StimulationAuditory PerceptionEvoked Potentials AuditorySpeech PerceptionFemalesense organsbusinessPsychologypsychological phenomena and processes030217 neurology & neurosurgerydescription
This study examined how changes in different types of acoustic features are processed in the brain for both speech and non-speech sounds. Event-related potentials (ERPs) were recorded in native Finnish speakers presented with sequences of repetitive vowels (/e/) or complex harmonical tones interspersed with infrequent changes in duration, frequency and either a vowel change (/o/ for vowel sequences) or a double deviant (frequency+duration change for tone sequences). The stimuli were presented monaurally in separate blocks to either the left or right ear. The results showed that speech stimuli were more efficiently processed than harmonical tones as reflected by an enhanced mismatch negativity (MMN) and P3a ERP components. In addition, the duration change in vowels elicited a larger MMN component than the equivalent change in tones. This result might reflect enhanced processing of duration features in the Finnish language in which phoneme duration plays a critical role.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-12-01 |