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The effects of stimulus complexity on the preattentive processing of self-generated and nonself voices: an ERP study
- Source :
- Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP
- Publication Year :
- 2016
- Publisher :
- Springer, 2016.
-
Abstract
- The ability to differentiate one's own voice from the voice of somebody else plays a critical role in successful verbal self-monitoring processes and in communication. However, most of the existing studies have only focused on the sensory correlates of self-generated voice processing, whereas the effects of attentional demands and stimulus complexity on self-generated voice processing remain largely unknown. In this study, we investigated the effects of stimulus complexity on the preattentive processing of self and nonself voice stimuli. Event-related potentials (ERPs) were recorded from 17 healthy males who watched a silent movie while ignoring prerecorded self-generated (SGV) and nonself (NSV) voice stimuli, consisting of a vocalization (vocalization category condition: VCC) or of a disyllabic word (word category condition: WCC). All voice stimuli were presented as standard and deviant events in four distinct oddball sequences. The mismatch negativity (MMN) ERP component peaked earlier for NSV than for SGV stimuli. Moreover, when compared with SGV stimuli, the P3a amplitude was increased for NSV stimuli in the VCC only, whereas in the WCC no significant differences were found between the two voice types. These findings suggest differences in the time course of automatic detection of a change in voice identity. In addition, they suggest that stimulus complexity modulates the magnitude of the orienting response to SGV and NSV stimuli, extending previous findings on self-voice processing.<br />This work was supported by Grant Numbers IF/00334/2012, PTDC/PSI-PCL/116626/2010, and PTDC/MHN-PCN/3606/2012, funded by the Fundacao para a Ciencia e a Tecnologia (FCT, Portugal) and the Fundo Europeu de Desenvolvimento Regional through the European programs Quadro de Referencia Estrategico Nacional and Programa Operacional Factores de Competitividade, awarded to A.P.P., and by FCT Doctoral Grant Number SFRH/BD/77681/2011, awarded to T.C.<br />info:eu-repo/semantics/publishedVersion
- Subjects :
- Adult
Male
medicine.medical_specialty
Mismatch negativity
Cognitive Neuroscience
Stimulus complexity
Sensory system
Audiology
050105 experimental psychology
Stimulus Complexity
Orienting response
Young Adult
03 medical and health sciences
Behavioral Neuroscience
P3a
0302 clinical medicine
Event-related potential
Reaction Time
medicine
Humans
Attention
0501 psychology and cognitive sciences
Evoked Potentials
Self-generated voice
Nonself voice
Communication
Science & Technology
business.industry
05 social sciences
Electroencephalography
Acoustic Stimulation
Time course
Auditory Perception
Evoked Potentials, Auditory
Voice
Female
Psychology
business
030217 neurology & neurosurgery
Event-related potentials
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP
- Accession number :
- edsair.doi.dedup.....96e861ee4069cf7c3047c2c95c63823f