Sep 2026· Proceedings of the National Academy of Sciences of the United States of America· Vol 123· 0 citations· 49 references
Medicine
TL;DR
A relationship between neural modulation and effector anthropomorphicity (i.e., human-likeness) that existed on an ensemble-wide and individual-neuron level is found, suggesting that human motor cortex activity incrementally increases in response to the visually observed agent's human-likeness.
Abstract
Significance The tendency for neurons in the motor cortex to respond during movement observation has been proposed to underlie cognitive processes from motor learning and language development to empathy and theory of mind. Understanding how the motor cortex is engaged during observation of abstract and anthropomorphic agents informs our understanding of these processes and may guide development of neural prostheses which harness the activity of motor cortical neurons to restore lost neurologic function. Here, we provide unique neuron-level evidence that human motor cortex activity is gradually modulated by how human-like an observed agent appears and moves. This finding advances our interpretation of “mirror” activity in the brain and could help guide the design of brain-controlled prostheses used by people with tetraplegia.
The corticospinal tract represents a highly developed neural system that dominates motor control in humans. This allows the performance of skilled finger movements, such as playing the piano. In contrast, according to preclinical studies, automatically performed complex movements, such as locomotion or cooperative fore...
V. Dietz, L. Filli· Journal of Physiology· 0 citations
Primary motor cortex has traditionally been conceptualized as a somatotopically organized structure, with discrete cortical regions corresponding to specific body parts. However, accumulating evidence suggests that motor cortex organization extends beyond simple effector-based representations to include higher-order fu...
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. Current neuroscience research shows that emotion, cognition, and embodiment-related brain activities underlie human subjective experiences, including bodily awareness and immediate pleasure. However, despite rapid advances in artificial intelligence and brain-machine interface technologies, artificial systems still s...
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