2000 | E. Grossman, M. Donnelly, R. Price, D. Pickens, V. Morgan, G. Neighbor, and R. Blake
This study used functional magnetic resonance imaging (fMRI) to investigate the neural areas involved in perceiving biological motion. The researchers identified brain regions activated by point-light figures, which represent human motion, and compared them to areas involved in coherent motion and kinetic boundary perception. Coherent motion activated the MT/MST complex in the temporo-parieto-occipital junction, while kinetic boundaries activated the kinetic-occipital (KO) region or lateral-occipital (LO) complex. Biological motion activation was found in a small region on the ventral bank of the superior-temporal sulcus (STS), lateral and anterior to MT/MST and anterior to KO. This region was more frequently localized in the right hemisphere than the left. A small region in the medial cerebellum was also active during biological motion viewing. These findings suggest the existence of neural mechanisms specialized for analyzing biological motion kinematics.
The study also examined the role of the cerebellum in biological motion perception, finding high activation in this region during biological motion viewing. This is consistent with evidence that the cerebellum is involved in motion perception and cognitive tasks. The study further explored the visual field topography of the posterior STS, finding bilateral activation regardless of the hemifield. The results indicate that the posterior STS is involved in biological motion perception, and that this area is not solely dedicated to this function. The study also found that the cerebellum is activated by biological motion, suggesting a possible link between motor planning and motion perception.
The study's findings support the existence of specialized neural mechanisms for biological motion perception, distinct from those involved in coherent motion or kinetic boundaries. The results highlight the importance of the STS and cerebellum in processing biological motion, and suggest that these areas may be involved in both motion perception and cognitive tasks. The study also shows that the posterior STS is involved in biological motion perception, and that this area is not solely dedicated to this function. The study's results contribute to the understanding of the neural basis of biological motion perception and the role of the cerebellum in this process.This study used functional magnetic resonance imaging (fMRI) to investigate the neural areas involved in perceiving biological motion. The researchers identified brain regions activated by point-light figures, which represent human motion, and compared them to areas involved in coherent motion and kinetic boundary perception. Coherent motion activated the MT/MST complex in the temporo-parieto-occipital junction, while kinetic boundaries activated the kinetic-occipital (KO) region or lateral-occipital (LO) complex. Biological motion activation was found in a small region on the ventral bank of the superior-temporal sulcus (STS), lateral and anterior to MT/MST and anterior to KO. This region was more frequently localized in the right hemisphere than the left. A small region in the medial cerebellum was also active during biological motion viewing. These findings suggest the existence of neural mechanisms specialized for analyzing biological motion kinematics.
The study also examined the role of the cerebellum in biological motion perception, finding high activation in this region during biological motion viewing. This is consistent with evidence that the cerebellum is involved in motion perception and cognitive tasks. The study further explored the visual field topography of the posterior STS, finding bilateral activation regardless of the hemifield. The results indicate that the posterior STS is involved in biological motion perception, and that this area is not solely dedicated to this function. The study also found that the cerebellum is activated by biological motion, suggesting a possible link between motor planning and motion perception.
The study's findings support the existence of specialized neural mechanisms for biological motion perception, distinct from those involved in coherent motion or kinetic boundaries. The results highlight the importance of the STS and cerebellum in processing biological motion, and suggest that these areas may be involved in both motion perception and cognitive tasks. The study also shows that the posterior STS is involved in biological motion perception, and that this area is not solely dedicated to this function. The study's results contribute to the understanding of the neural basis of biological motion perception and the role of the cerebellum in this process.