fMRI-activation during drawing a naturalistic or sketchy portrait

摘要: Neural processes for naturalistic drawing might be discerned into object recognition and analysis, attention guiding eye hand interaction, encoding of visual features in an allocentric reference frame, a transfer the motor command precise guidance with tight sensorimotor feedback. Cerebral representations real life paradigm during have sparsely been investigated. Using functional Magnetic Resonance Imaging (fMRI) we measured 20 naive subjects portrait from frontal face presented as photograph. Participants were asked to draw either or sketchy characteristic way. Tracing contours pencil passive viewing served control conditions. Compared viewing, recruited predominantly dorsal pathway, somatosensory areas bilateral BA 44. The right occipital lobe, middle temporal (MT) fusiform area increasingly active compared well. tracing pencil, both tasks involved precuneus together cuneus inferior lobe. Overall, our study identified cerebral previously proposed aspects drawing: perception analysis (fusiform gyrus higher areas), retrieval locations frame (precuneus), continuous feedback output (parietal sulcus, cerebellar hemisphere).