Ageing and visual spatiotemporal processing

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

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9 Citations (Scopus)
3 Downloads (Pure)

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

Keywords

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

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    Pilz, K. S., Kunchulia, M., Parkosadze, K., & Herzog, MH. (2015). Ageing and visual spatiotemporal processing. Experimental Brain Research, 233(8), 2441-2448. https://doi.org/10.1007/s00221-015-4314-9