Ageing and visual spatiotemporal processing

Karin Stefanie Pilz, Marina Kunchulia, Khatuna Parkosadze, MH Herzog

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)
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Abstract

Ageing affects many visual functions. Here, we investigated the effects of ageing on vernier acuity and backward masking using the shine-through paradigm. We divided healthy older adults (>60 years) into two groups depending on whether vernier duration was comparable to younger adults (Older Adults 1) or not (Older Adults 2). Backward masking was deteriorated for Older Adults 2 but not for Older Adults 1. In addition, by using complex masking gratings, we found deficits in spatial and tempo- ral vision in Older Adults 2, which cannot be explained by deteriorated visual acuity, pointing to cortical rather than retinal causes. Our results highlight the importance of tak- ing into account individual differences in visual ageing research. In addition, our results have important implica- tions for schizophrenia. Schizophrenia has been suggested to be a form of early brain ageing. Linking our current masking results in ageing to previous masking results in schizophrenia shows that schizophrenia is not a form of early ageing, at least not in the visual domain.
Original languageEnglish
Pages (from-to)2441-2448
Number of pages8
JournalExperimental Brain Research
Volume233
Issue number8
Early online date20 May 2015
DOIs
Publication statusPublished - Aug 2015

Bibliographical note

Acknowledgments
We would like to thank Marc Repnow for his help in setting up the experiments. This work was supported by the research grant “Perception, cognition and healthy brain aging” of the VELUX Foundation. Michael Herzog is a member of the Swiss
National Science Foundation (SNF) Project Synapsy

Keywords

  • ageing
  • visual perception
  • spatial processing
  • temporal processing
  • spatiotemporal
  • schizophrenia

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