Have any of you come across any studies which have looked at
optokinetic tracking and the blurring speed (visual tracking limits)
in the elderly population. Lewinson (1990) used a 3-D optical
scanner (basically a projector) to test the blurring speed of young
dyslexic and non-dyslexic groups. He suggested that this tracking
ability was a measure of cerebellar functioning and found it to
correlate with measures of Romberg balance. Also, both cerebellar
abilities had discriminative validity and distinguised dyslexic and
non-dyslexic groups.
Aging is associated with declines in balance and visual tracking (if
you want references ask me, I'll send you a chapter). But I have not
found studies which specifically use the blurring speed methodology.
Have any of you?
Give us a hand here folks.
Mike Hogan. Ireland.
