Psihologija 2010 Volume 43, Issue 4, Pages: 359-373
Full text ( 239 KB)
Temporal event-structure coding in developmental dyslexia: Evidence from explicit and implicit temporal processes
Elliott Mark A., Shanagher Louise M.
As an alternative to theories positing visual or phonological deficits it has
been suggested that the aetiology of dyslexia takes the form of a temporal
processing deficit that may refer to impairment in the functional
connectivity of the processes involved in reading. Here we investigated this
idea in an experimental task designed to measure simultaneity thresholds.
Fifteen children diagnosed with developmental dyslexia, alongside a matched
sample of 13 normal readers undertook a series of threshold determination
procedures designed to locate visual simultaneity thresholds and to assess
the influence of subthreshold synchrony or asynchrony upon these thresholds.
While there were no significant differences in simultaneity thresholds
between dyslexic and normal readers, indicating no evidence of an altered
perception, or temporal quantization of events, the dyslexic readers reported
simultaneity significantly less frequently than normal readers, with the
reduction largely attributable presentation of a subthreshold asynchrony. The
results are discussed in terms of a whole systems approach to maintaining
information processing integrity.
Keywords: Dyslexia, event-structure coding, event simultaneity/asynchrony, visual perception
More data about this article available through SCIndeks