Cite as:
Kuba J, Kremláek J, Langrová J, Kubová J, Vit J, 2007, "Ageing effect at various levels of visual information processing--VEPs testing" Perception 36 ECVP Abstract Supplement

Ageing effect at various levels of visual information processing--VEPs testing

J Kuba, J Kremláek, J Langrová, J Kubová, J Vit

In 133 healthy volunteers aged 19 - 83 years (38 ± 17 years) we examined reactions of the primary visual cortex to pattern-reversal stimuli, responses of extrastriate areas to motion-onset, and P300 wave in visual cognitive task (recognition of digits and letters). The most distinct change of visual evoked potentials (VEPs) was a prolongation of P300 latency representing highly significant delay of cognitive processes toward elderly (2 ms/1 year of age, r=0.71). Decreased cognitive functions due to ageing are signalled also by reduction of P300 amplitude (r=-0.48). Motion processing (activity of the magnocellular system/dorsal stream) seems to be more influenced by ageing (irrespective of gender) compared to the parvocellular system/ventral stream function according to age-related changes in latencies of the motion-onset VEPs (increase of 0.5 ms/1 year) and of the pattern-reversal VEPs (0.3 ms/1year increase). More detailed information can be found on our web page: http://www.lfhk.cuni.cz/elf.

[Supported by Ministry of Education (VZ 0021620816) and Ministry of Health (Grant NR8421-4/2005) of the Czech Republic.]

These web-based abstracts are provided for ease of seaching and access, but certain aspects (such as as mathematics) may not appear in their optimum form. For the final published version of this abstract, please see
ECVP 2007 Abstract Supplement (complete) size: 2091 Kb