For an alternative to the anterior attentional hypothesis, you might
want to look at "Role of the human anterior cingulate cortex in the
control of oculomotor,manual, and speech responses: a positron
emission tomography study", Journal of Neurophysiology. 70(2):453-69,
1993 (Aug). In this study, Paus and colleagues demonstrated
task-specific changes in rCBF (blood flow) in distinct subregions of
the anterior cingulate cortex (ACC( that depended on the output system
employed by a given task. They hypothesized that the ACC is an element
of a motor control system that facilitates appropriate responses and
inhibits inappropriate responses.
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Sean Marrett email: sean at bic.mni.mcgill.ca
(New address - old one should still work)
wb213, Brain Imaging Centre, Montreal Neurological Institute.
3801 University St., Montreal, Quebec. H3A 2B4 (514)-398-1537,1996 Fax: 8948
