"...medieval scholars would have located sensory perception in the brain (Siraisi, 1990; McIlwain, 2006). However, they would have perceived the five senses as active entities conveying information about the outside world to the internal senses of common sense, imagination, judgement, memory and fantasy (the ability to visualize).
Scholars differed considerably over how this worked in practice: for example, were rays emitted from the eyes towards the viewed object or was it the other way round? Either theory allowed for these rays to influence both viewer and object, thus explaining the widespread concept of the evil eye, or a belief still current in the 18th century that what a mother saw affected her foetus. The brain, however, was not the only sensitive organ of the body."
Woolgar, C. M. The Senses in Late Medieval England. New Haven [Conn.]: Yale University Press, 2007.
via The Frontal Cortex
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