The classical view of how the human brain controls voluntary movement might not tell the whole story. That map of the primary motor cortex — the motor homunculus — shows how this brain region ...

Within the brain’s frontal lobe lies the primary motor cortex, a sliver of neurons that coordinates movement. Beginning in the 1930s, scientists developed a map of this brain region called a ...

In simple terms, they show that one region of the primary motor cortex is linked to movements in the lower body, one to hand-related movements, which includes shoulders, and another to facial ...

The finding involves a strip of brain tissue called the primary motor cortex. As its name suggests, this area is considered the main source of signals that control voluntary movements. Textbooks ...

To conduct the study, the researchers recorded the activity from multielectrode arrays implanted in the primary motor cortex of macaque ... patterns from individual movements, rather than ...

During purposeful movement, whether reaching for a cookie or walking ... they recorded striatal responses. They then lesioned primary motor cortex and recorded how behavior and striatal activity was ...

More information: Motor learning refines thalamic influence on motor cortex, Nature (2025). DOI: 10.1038/s41586-025-08962-8 Provided by University of California - San Diego ...