Abstract
Performance on tasks of digit span, mental rotation and immediate free recall of supraspan word lists was measured before and after oral administration of 1.2 mg scopolamine or placebo to healthy young volunteers. Digit span and mental rotation were sensitive to task-specific interference from articulatory suppression and spatial tapping tasks, respectively. Neither task was affected by scopolamine when completed alone or in combination with a secondary task. A concurrent secondary task reduced immediate free recall in a nonspecific fashion (i.e., spatial tapping or articulatory suppression impaired performance equally). Scopolamine significantly reduced the number of words recalled under all conditions. The results are interpreted as evidence for selective impairment of the central executive mechanism by scopolamine without disruption of function in the articulatory loop or visuospatial scratch pad.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
