Left minineglect in dyslexic adults

We searched for a core mechanism underlying the diverse behavioural and sen sorimotor deficits in dyslexic subjects. In psychophysical temporal order j udgement and line motion illusion tasks, adult dyslexics processed stimuli in the left visual hemifield significantly (similar to 15 ms) more slowly t han normal readers, indicating a left-sided 'minineglect'. Furthermore, abr upt stimuli captured attention in both visual hemifields less effectively i n dyslexics than in normal readers. These abnormalities could reflect right parietal lobe hypofunction, a consequence of a general magnocellular defic it demonstrated previously. Based on these and previous data, we propose a causal chain which could result in several sensory and cognitive deficits o bserved in dyslexic subjects.