The following paper in the latest PNAS looks at how fluctuations in
spontaneous activity can influence subsequent perception.
http://www.pnas.org/content/105/31/10984.full.pdf+html
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Dr Tim Andrews
Department of Psychology
University of York
York, YO10 5DD
UK
Tel: 44-1904-434356
Fax: 44-1904-433181
http://www-users.york.ac.uk/~ta505/
http://www.york.ac.uk/depts/psych/www/admissions/cns/