Abstract
We studied spatial attentional performance on a visually cued reaction time task in men with isolated hypogonadotropic hypogonadism. A subset of these patients, who displayed mirror movements, have spatial attentional abnormalities. They were slow to respond to targets in the right visual field and especially slow when those targets followed incorrect or diffuse cues. This slowing was present for at least 500 msec after cue onset. They responded equally to targets in the left visual field independent of the spatial cues. The patient population as a whole was significantly faster than controls across all experimental conditions, although the speed of their attentional movement was normal. These data suggest that patients with isolated hypogonadotropic hypogonadism perform reaction time tasks quickly, that faster reaction times do not reflect superior attentional performance, and that a subset of these patients has a spatial attentional abnormality.
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