A virtual balancing task with parallel experiments on human and non-human primates revealed a spectrum of behaviors (classified by a computational model into position, velocity, or mixed control strategy) that can serve as basis for analyzing neural population dynamics.
Roni O Maimon-Mor, Hunter R Schone ... Tamar R Makin
Biological- or artificial-arm experience during early development has a significant effect on artificial-arm motor control in adulthood, providing evidence for limited sensorimotor plasticity beyond childhood.
Petra Fischer, Witold J Lipski ... R Mark Richardson
When coupling between STN spikes and cortical gamma oscillations was strong, subsequent movement was initiated earlier, independent of changes in mean firing rates, demonstrating the importance of relative spike timing.
Avital Hahamy, Stamatios N Sotiropoulos ... Tamar R Makin
Building on previous work (Makin et al., 2013), we show that the brains of individuals born without a hand adaptively change to compensate for their disability.
Humans can rapidly build a new controller when learning continuous movement tasks and can flexibly integrate this process with adaptation of an existing controller.
The brain continues to represent individual fingers in primary somatosensory cortex decades after the amputation of a hand, indicating that cortical maps do not require ongoing sensory input from the body.
Mohsen Omrani, Chantelle D Murnaghan ... Stephen H Scott
Somatosensory feedback is transmitted to many sensory and motor cortical regions within 25 milliseconds and ongoing behavioural tasks alter the spatiotemporal pattern of this perturbation-related activity, supporting rapid motor responses to attain behavioural goals.
Neurons in motor cortex contain information about each arm, but these signals are separated into different dimensions, allowing separate control of each arm.