Temporal integration & healthy ageing

Jefta Daniël Saija

Research output: ThesisThesis fully internal (DIV)

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When individual images follow each other in a rapid pace, then people can perceive them as if they belong to 1 integrated image. Series of these integrated images help us to perceive the world in a fluent manner. In this dissertation it is investigated whether people can also integrate fast paced sounds. We can conclude that this is indeed the case. It has also been investigated what the effect of age is on this process. It is concluded that older people integrate images and sounds over longer intervals, which could be linked to the slowing down of cognitive process when people age. Finally, it is investigated what the effect of age is on the intelligibility of degraded speech, which is presented at different speeds. The speech was degraded in 2 ways: by (1) removing speech as fixed intervals or (2) filling these intervals of silence with noise. The benefit of adding the noise compared to the intervals of silence is a way to measure the ability to, among other things, use language skills and cognitive processes in such a way that the individual speech parts / information are integrated so that the speech becomes understandable. Results showed that older people have more difficulty coping with faster speech, but gain more benefit from adding the noise with slower speech, probably because of the lifelong gathered language skills.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • University of Groningen
  • Baskent, Deniz, Supervisor
  • Akyürek, Elkan, Co-supervisor
  • Andringa, Tjeerd, Co-supervisor
Award date14-Oct-2019
Place of Publication[Groningen]
Print ISBNs978-94-034-2003-5
Electronic ISBNs978-94-034-2002-8
Publication statusPublished - 2019

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