Researchers have discovered that a specific gene expressed in spinal nerves plays a crucial role in memorizing responses to potential threats, challenging the notion that motor learning and memory are solely confined to brain circuits. Through a study on transgenic mice, they found that inhibitory neurons in the spinal cord can learn novel responses long after the nerves have locked in place, shedding light on how the spinal cord can remain plastic throughout life. This understanding could inspire novel research into treatments for nervous system damage in humans, particularly in improving recovery after spinal cord injury.
Scientists have made a groundbreaking discovery in neuroscience by successfully using a noninvasive brain stimulation technique to modulate deep brain activity, leading to enhanced motor learning, particularly in older adults. The study focused on the striatum, a key region involved in motor learning, and found that the stimulation increased activity in the putamen, resulting in improved performance in a finger-tapping task. The technique shows promise for developing new treatments for brain disorders and provides insights into the functioning of deep brain structures. However, further research is needed to understand the underlying mechanisms and long-term effects.
Short-term motor memories, lasting less than a minute, are more important for relearning movements than long-term ones, according to a new study by Harvard researchers. The study challenges conventional thinking on the role of short and long-term memories in relearning motor skills, indicating the existence of mechanisms for regulating the learning rates for memories that are distinct from the memories themselves. Understanding short-term motor memories is crucial, as they could be just as vital as long-term ones for executing actions effectively.
