An fMRI study of imagined self-rotation

In the present study, functional magnetic resonance imaging was used to examine the neural mechanisms involved in the imagined spatial transformation of one's body. The task required subjects to update the position of one of four external objects from memory after they had performed an imagined...

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Bibliographic Details
Published in:Cognitive, affective, & behavioral neuroscience affective, & behavioral neuroscience, 2001-09, Vol.1 (3), p.239-249
Main Authors: CREEM, Sarah H, DOWNS, Traci Hirsch, WRAGA, Maryjane, HARRINGTON, Gregory S, PROFFITT, Dennis R, DOWNS, J. Hunter
Format: Article
Language:English
Subjects:
Adult
Anatomical correlates of behavior
Behavioral psychophysiology
Biological and medical sciences
Brain - physiology
Brain Mapping
Cerebellum - physiology
Cerebral Cortex - physiology
Dominance, Cerebral - physiology
Female
Fundamental and applied biological sciences. Psychology
Gyrus Cinguli - physiology
Humans
Imagination - physiology
Kinesthesis - physiology
Magnetic Resonance Imaging
Male
Nerve Net - physiology
Orientation - physiology
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Rotation
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Summary:In the present study, functional magnetic resonance imaging was used to examine the neural mechanisms involved in the imagined spatial transformation of one's body. The task required subjects to update the position of one of four external objects from memory after they had performed an imagined self-rotation to a new position. Activation in the rotation condition was compared with that in a control condition in which subjects located the positions of objects without imagining a change in self-position. The results indicated similar networks of activation to other egocentric transformation tasks involving decisions about body parts. The most significant area of activation was in the left posterior parietal cortex. Other regions of activation common among several of the subjects were secondary visual, premotor, and frontal lobe regions. These results are discussed relative to motor and visual imagery processes as well as to the distinctions between the present task and other imagined egocentric transformation tasks.
ISSN:1530-7026
1531-135X
DOI:10.3758/CABN.1.3.239