Lower visual field preference for the visuomotor control of limb movements in the human dorsomedial parietal cortex

• DOI: 10.1007/s00429-021-02254-3
• Publication Date: 2021-03-18T22:15:55Z
• Authors: Teresa Maltempo; Sabrina Pitzalis; Martina Bellagamba; Sara Di Marco; Patrizia Fattori; Gaspare Galati; Claudio Galletti; Valentina Sulpizio
• Keywords: 0301 basic medicine; Functional magnetic resonance; HPEc; Pointing; Superior parietal lobule; Visuomotor control; Movement; Hand; Magnetic Resonance Imaging; 03 medical and health sciences; Parietal Lobe; Animals; Humans; Macaca; Original Article; Visual Fields; functional magnetic resonance; HPEc; pointing; superior parietal lobule; visuomotor control

Visual cues coming from the lower visual field (VF) play an important role in guidance of upper and limb movements. A recently described region situated dorsomedial parietal cortex, area hPEc (Pitzalis et al. NeuroImage 202:116092, 2019), might have a integrating visually derived information with somatomotor signals to guide interaction environment. In macaque, it has been demonstrated that PEc receives mostly but, date, there no systematic investigation VF preference newly defined human homologue macaque (hPEc). Here we examined preferences while participants performed visuomotor task implying spatially directed delayed eye-, hand- foot-movements towards different spatial locations within VF. By analyzing data as function target which upcoming movements were planned (and then executed), observed presence asymmetry vertical dimension hPEc, being this more strongly activated by targets located compared This result confirms view, first advanced monkey, is involved processing body external environment, including locomotion. We also contralateral dominance for foot selective cortex anterior hPEc. reflect (which includes areas PE S-I) providing highly topographically organized signals, likely useful achieve appropriate posture during