test
Search publications, data, projects and authors

Thesis

English

ID: <

10670/1.syqowk

>

Where these data come from
AUDITORY PERCEPTION : TEMPORAL PROCESSSING AND AUDITORY-MOTOR INTERACTION

Abstract

audiomotor interactions modulate our perception of time and possibly our sense of being the agent of our actions. These aspects are highlighted in this thesis in the form of three sub-sections. First, there has been a revision of recent discoveries regarding time processing in the context of hearing synchronisation (Part A). The review already published summarises behavioural and neuroimagery findings with regard to sensory synchronisation in the context of hearing perception, and points to the potential link between hearing synchronisation and the attentional system. In the following sections, B and C, correspond to two studies on motor-hearing recalibration. In all the studies, the participants carried out a task of time judgement. In Part B, the behavioural responses of the subjects were analysed by a psychometric function and linked to the adjustment time learned during the habit of the motor hearing association, as well as to the meaning of the sound object. More specifically, it is what the representation of the action via the sound effect influences the motor-hearing recalibration. Using ecological sounds, we have shown that the beginning of the sound provides sufficient information for recalibration to take place and that sound significance is irrelevant. In Part C, we use the same electroencephalogram (EEG) paradigm to characterise neuronal correlations of motor-hearing recalibration. We focused on the effect of time and condition, but more on the semantic of sound. We found that two early components are involved, a sensory component and a motor component that involve three cereal structures mainly: the upper temporal gyrus, the base ganglia and the cingular cortex. In summary, the present work confirms that there is a link between the treatment of the temporal aspect and the sensorimotor system in the context of hearing perception. We have shown the influence of the start of sound, the non-influence of the semantic of sound in the context of moto-hearing recalibration, as well as the brain regions involved in this process. — Auditory-motor interactions shape our perception of time and possibly of agency. These aspects are raised here in three parts. First, we review current evidence on temporal processing in the context of Auditory entrainment (part A). This published review summarises behavioral and Neuroimaging findings concerning Sensory entrainment in Auditory perception and discusses its possible link to the Attentional system. The two following shares, B and C, consist of two studies of motor-auditory temporal recalibration. In both studies, a temporal order judgment task was performed by participants. In part B, the subjective’ behavioural responses were analysed by means of a Psychometric function and related to both the delay of adaptation during the learning of a motor-auditor association, and to the measurement of the sound. More specifically, how does the representation of action embedded in the sound influences the motor-auditory recalibration. By using long ecological sounds in this study, we show that sound onset comes from background information for the recalibration to occur and that the measurement of the sound seems not to be as important. In the part C, we implemented the same paradigm for electroenphalogram (EEG) to study the neural correlates of motor-auditory recalibration. We focus on the effect of delay and condition instead of the semantic meaning of the sound. We find the involvement of two early components, a Sensory and a motor component which involves three main structures: the superior temporal gyrus, the basai ganglia and the cingulate cortex. In summary, this work confirms the link between temporal processing and sensorimotor systems in the context of Auditory perception. We show the influence of the sound onset, the non-influence of the measuring of the sound in the context of motor- Auditory recalibration, as well as the neural regions involved in this process.

Your Feedback

Please give us your feedback and help us make GoTriple better.
Fill in our satisfaction questionnaire and tell us what you like about GoTriple!