This title appears in the Scientific Report : 2008 

Where is a Nose with Respect to a Foot? The left Posterior Parietal Cortex Processes Spatial Relationships among Body Parts
Corradi-Dell'Acqua, C.
Hesse, M. D. / Rumiati, R. I. / Fink, G. R.
Institut für Neurowissenschaften und Biophysik - Medizin; INB-3
Cerebral cortex, 18 (2008) S. 2879 - 2890
Oxford Oxford Univ. Press 2008
2879 - 2890
Journal Article
Funktion und Dysfunktion des Nervensystems
Cerebral Cortex 18
Please use the identifier: in citations.
Neuropsychological studies suggest that patients with left parietal lesions may show impaired localization of parts of either their own or the examiner's body, despite preserved ability to identify isolated body parts. This deficit, called autotopagnosia, may result from damage to the Body Structural Description (BSD), a representation which codes spatial relationships among body parts. We used functional magnetic resonance imaging to identify the neural mechanisms underlying the BSD. Two human body or building parts (factor: STIMULI) were shown to participants who either identified them or evaluated their distance (factor: TASK). The analysis of the interaction between STIMULI and TASK, which isolates the neural mechanism underlying BSD, revealed an activation of left posterior intraparietal sulcus (IPS) when the distance between body parts was evaluated. The results show that the left IPS processes specifically the information about spatial relationships among body parts and thereby suggest that damage to this area may underlie autotopagnosia.