Egomotion‐related visual areas respond to active leg movements. Issue 11 (28th March 2019)
- Record Type:
- Journal Article
- Title:
- Egomotion‐related visual areas respond to active leg movements. Issue 11 (28th March 2019)
- Main Title:
- Egomotion‐related visual areas respond to active leg movements
- Authors:
- Serra, Chiara
Galletti, Claudio
Di Marco, Sara
Fattori, Patrizia
Galati, Gaspare
Sulpizio, Valentina
Pitzalis, Sabrina - Abstract:
- Abstract: Monkey neurophysiology and human neuroimaging studies have demonstrated that passive viewing of optic flow stimuli activates a cortical network of temporal, parietal, insular, and cingulate visual motion regions. Here, we tested whether the human visual motion areas involved in processing optic flow signals simulating self‐motion are also activated by active lower limb movements, and hence are likely involved in guiding human locomotion. To this aim, we used a combined approach of task‐evoked activity and resting‐state functional connectivity by fMRI. We localized a set of six egomotion‐responsive visual areas (V6+, V3A, intraparietal motion/ventral intraparietal [IPSmot/VIP], cingulate sulcus visual area [CSv], posterior cingulate sulcus area [pCi], posterior insular cortex [PIC]) by using optic flow. We tested their response to a motor task implying long‐range active leg movements. Results revealed that, among these visually defined areas, CSv, pCi, and PIC responded to leg movements (visuomotor areas), while V6+, V3A, and IPSmot/VIP did not (visual areas). Functional connectivity analysis showed that visuomotor areas are connected to the cingulate motor areas, the supplementary motor area, and notably to the medial portion of the somatosensory cortex, which represents legs and feet. We suggest that CSv, pCi, and PIC perform the visual analysis of egomotion‐like signals to provide sensory information to the motor system with the aim of guiding locomotion.
- Is Part Of:
- Human brain mapping. Volume 40:Issue 11(2019)
- Journal:
- Human brain mapping
- Issue:
- Volume 40:Issue 11(2019)
- Issue Display:
- Volume 40, Issue 11 (2019)
- Year:
- 2019
- Volume:
- 40
- Issue:
- 11
- Issue Sort Value:
- 2019-0040-0011-0000
- Page Start:
- 3174
- Page End:
- 3191
- Publication Date:
- 2019-03-28
- Subjects:
- brain mapping -- CSv -- functional connectivity -- locomotion -- optic flow -- self‐motion
Brain mapping -- Periodicals
611.81 - Journal URLs:
- http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-0193 ↗
http://onlinelibrary.wiley.com/ ↗ - DOI:
- 10.1002/hbm.24589 ↗
- Languages:
- English
- ISSNs:
- 1065-9471
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 4336.031000
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 23500.xml