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Journal of Cognitive Neuroscience

August 15, 2003, Vol. 15, No. 6, Pages 862-872
(doi: 10.1162/089892903322370780)
© 2003 Massachusetts Institute of Technology
Shadows in the Brain
Article PDF (295.57 KB)

The aims of the present study were to investigate whether the processing of an object shadow occurs implicitly, that is without conscious awareness, and where physically within the human brain shadows are processed. Here we present neurological evidence, obtained from studies of brain-injured patients with visual neglect, that shadows are implicitly processed and that this processing may take place within the temporal lobe. Neglect patients with lesions that do not involve the right temporal lobe were still able to process shadows to optimize object shape perception. In contrast, shadow processing was not found to be as efficient in neglect patients with lesions that involve the right temporal lobe.