Well‐kept secrets of the right hemisphere

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Abstract
Verbal and nonverbal recall of a simple tactual stimulus was assessed in patients receiving left intracarotid injections of sodim amytal. During the period of dominant hemisphere anesthetization, a common object was presented to the left hand-right hemisphere but was kept out of view. Following recovery from the drug, six of the eight patients were unable to recall the object verbally, but recognized it immediately in a visual multiple-choice array. These results demonstrate a dissociation of verbal and nonverbal memory mechanisms which suggests that delayed interhemispheric transfer of a functional sensory message is highly improbable.

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