Abstract
The study investigated auditory temporal processing on a tens of milliseconds scale that is the interval when two consecutive stimuli are processed either together or as distinct events. Distinctiveness is defined by one’s ability to make correct order judgments of the presented sounds and is measured via the spatial temporal order judgement task (TOJ).The study aimed to identify electrophysiological indices of the TOJ performance. Tone pairs were presented with inter-stimulus intervals (ISI) varying between 25 and 75 ms while EEG was recorded. A pronounced amplitude change in the P2 interval was found between the event-related potential (ERP) of tone pairs having ISI = 55 and 65 ms, but it was a characteristic only of the group having poor behavioral thresholds. With the two groups combined, the amplitude change between these ERPs in the P2 interval showed a medium-size correlation with the behavioral threshold.
Highlights
Understanding the auditory temporal processing functions of the human cognitive system is crucial to improve differentiation and training of groups displaying deficiencies in linguistic and other do mains (Halliday, Tuomainen, & Rosen, 2017)
We focused on the spatial temporal order judgment task as it has been frequently reported as a sensitive indicator of dysfunction and its training showed transfer effect to linguistic skills, such as phonological awareness (Fostick, Eshcoly et al, 2014; Gaab et al, 2007; Szelag et al, 2014)
We found an EEG based marker likely indexing the discrimination threshold addressed by spatial temporal order judgment task (sTOJ) (Simon, Balla, & Win kler, 2019); the amplitude difference between the event-related potential (ERP) of tone pairs having inter-stimulus intervals (ISI) = 55 ms and ISI = 65 ms was significantly greater than any other amplitude differences of adjacent ISI ERPs
Summary
Understanding the auditory temporal processing functions of the human cognitive system is crucial to improve differentiation and training of groups displaying deficiencies in linguistic and other do mains (Halliday, Tuomainen, & Rosen, 2017). Some of these functions are still poorly defined and the same putative construct is often measured using different tasks (Fostick & Babkoff, 2013). We aim to identify electrophysiological correlates of the auditory spatial temporal order judgment task that is assumed to measure tem poral discrimination on a tens of milliseconds scale. Electrophysiological correlates of this temporal discrimination function may help to specify the role of temporal pro cessing in these deficits as well as provide a bridge between behavioral measures and the underlying neurophysiological mechanisms
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
