caa a22 4500 445353805 CHVBK 20180317142853.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s00221-011-2765-1 doi (NATIONALLICENCE)springer-10.1007/s00221-011-2765-1 Hard and fast rules about the body: contributions of the action stream to judging body space [Elektronische Daten] [Sylvia Hach, Masami Ishihara, Peter Keller, Simone Schütz-Bosbach] Analogously to the visual system, somatosensory processing may be segregated into two streams, with the body constituting either part of the action system or a perceptual object. Experimental studies with participants free from neurological disease which test this hypothesis are rare, however. The present study explored the contributions of the two putative streams to a task that requires participants to estimate the spatial properties of their own body. Two manipulations from the visuospatial literature were included. First, participants were required to point either backward towards pre-defined landmarks on their own body (egocentric reference frame) or to a forward projection of their own body (allocentric representation). Second, a manipulation of movement mode was included, requiring participants to perform pointing movements either immediately, or after a fixed delay, following instruction. Results show that accessing an allocentric representation of one's own body results in performance changes. Specifically, the spatial bias shown to exist for body space when pointing backward at one's own body disappears when participants are requested to mentally project their body to a pre-defined location in front space. Conversely, delayed execution of pointing movements does not result in performance changes. Altogether, these findings provide support for a constrained dual stream hypothesis of somatosensory processing and are the first to show similarities in the processing of body space and peripersonal space. Springer-Verlag, 2011 Action-perception nationallicence Left-right handedness nationallicence Lateralisation nationallicence Personal space nationallicence Body representation nationallicence Somatosensation nationallicence Hach Sylvia Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstr. 1a, 04103, Leipzig, Germany aut Ishihara Masami Tokyo Metropolitan University, Tokyo, Japan aut Keller Peter Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstr. 1a, 04103, Leipzig, Germany aut Schütz-Bosbach Simone Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstr. 1a, 04103, Leipzig, Germany aut Experimental Brain Research Springer-Verlag 212/4(2011-08-01), 563-574 0014-4819 212:4<563 2011 212 221 https://doi.org/10.1007/s00221-011-2765-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2765-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hach Sylvia Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstr. 1a, 04103, Leipzig, Germany aut NATIONALLICENCE 700 1- Ishihara Masami Tokyo Metropolitan University, Tokyo, Japan aut NATIONALLICENCE 700 1- Keller Peter Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstr. 1a, 04103, Leipzig, Germany aut NATIONALLICENCE 700 1- Schütz-Bosbach Simone Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstr. 1a, 04103, Leipzig, Germany aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 212/4(2011-08-01), 563-574 0014-4819 212:4<563 2011 212 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer