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Science 5 October 2007:
Vol. 318. no. 5847, p. 44
DOI: 10.1126/science.1144865
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Technical Comments

Comment on "Top-Down Versus Bottom-Up Control of Attention in the Prefrontal and Posterior Parietal Cortices"

Jeffrey D. Schall,1* Martin Paré,2 Geoffrey F. Woodman1

Buschman and Miller (Reports, 30 March 2007, p. 1860) described the activity of ensembles of neurons in parietal and frontal cortex of monkeys performing visual search for targets that were easy or hard to distinguish from distractors. However, their conclusions are called into question by discrepancies between their results and publications from other laboratories measuring the same neural process.

1 Center for Integrative and Cognitive Neuroscience, Vanderbilt Vision Research Center, Department of Psychology, Vanderbilt University, Nashville, TN 37203, USA.
2 Centre for Neuroscience Studies and Departments of Physiology and Psychology, Queen's University, Kingston, ON K7L 3N6, Canada.

* To whom correspondence should be addressed. E-mail: jeffrey.d.schall{at}vanderbilt.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)