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Right but not left angular gyrus modulates the metric component of the mental body representation: a tDCS study |
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| Authors: | Grazia Fernanda Spitoni Giorgio Pireddu Rocco Luca Cimmino Gaspare Galati Alberto Priori Michal Lavidor Liron Jacobson Luigi Pizzamiglio |
| Affiliation: | 1. Department of Psychology, The Sapienza University of Rome, Rome, Italy 2. Neuropsychology Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy 3. Dipartimento di Scienze Neurologiche, Università degli Studi di Milano, Fondazione IRCCS Ospedale Maggiore Policlinico, Milan, Italy 4. The Leslie and Susan Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat Gan, Israel 5. Department of Psychology, Bar-Ilan University, Ramat Gan, Israel |
| Abstract: | The parietal lobes contribute to body-space representation. The present work aims at characterizing the functional role of the inferior parietal lobe in body-space representation and at studying the different roles of the angular gyrus in the right and left hemisphere. We conducted three separate transcranial direct current stimulation (tDCS) experiments using “tactile distance task” as an implicit measure of body representation. Whereas anodal tDCS on the right angular gyrus influences vocal reaction times (vRT) for stimuli delivered on the ipsilateral body parts without changes of accuracy, right tDCS improved both vRT and accuracy for tactile stimuli on the contralateral limbs. Sham or left parietal anodal tDCS had no effect. These evidences support the view that right parietal areas have a crucial role in the metric component of the body representation. |
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