Contrary to previous research, a new study shows that somatosensory cortex is involved in retaining new motor skills. Published in the open-access journal PLOS Biology, the authors report that retention of motor memories is disrupted when the somatosensory region of the brain, but not the motor cortex, is inhibited after learning.
We know that facts or events require the hippocampus -- a seahorse-shaped structure in the middle of the brain -- to be consolidated into long-term memory. But scientists still do not know how the consolidation process works for motor memories such as how to play the piano or swing a bat. Understanding this crucial process could help devise better strategies for rehabilitation and motor re-learning after injury.
To test whether somatosensory cortex (which roughly speaking runs across the top of the brain from ear to ear) plays a role in the formation of long term motor memory, researchers trained participants on a motor task in which they learned to move a robotic arm through a gradually increasing force field that perturbed normal movements. Immediately after training, continuous transcranial magnetic stimulation was used to inhibit either the somatosensory or primary motor regions of the brain (the primary motor cortex runs across the top of the brain in a band just in front of the somatosensory cortex).
Motor learning was assessed the next day, and the results showed that retention of motor memory was blocked only in people whose somatosensory cortex was inhibited. Retention was not affected after inhibiting motor cortex. Further tests confirmed that the somatosensory cortex functions specifically in consolidating motor memories, but not in their subsequent retrieval once consolidation has occurred.
Although remapping of sensory cortex is known to occur with motor learning, this is the first study to show that an active sensory cortex is necessary for consolidating or retaining new motor skills after they have been learned. For now, the findings can only be applied to the type of adaptive motor learning tested in this experiment. However, further studies might ultimately explore whether somatosensory cortex is also necessary for skills such as dancing, which require learning sequences of movements.
"The significance of this work is that it shows that the storage of updated somatic information which is accumulated during training, may be central to its retention and subsequent re-use," the authors said. "Our findings point to possible benefits of an expanded focus on the somatosensory system in rehabilitation and retraining."
https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3000469
http://sciencemission.com/site/index.php?page=news&type=view&id=publications%2Fsomatosensory-cortex&filter=22
Somatosensory cortex is required for learning motor skills
- 1,667 views
- Added
Edited
Latest News
Abusive drugs hijack natura…
By newseditor
Posted 23 Apr
Mechanism of action of the…
By newseditor
Posted 23 Apr
Role of fat in rare neurolo…
By newseditor
Posted 23 Apr
How protein synthesis in de…
By newseditor
Posted 22 Apr
Atlas of mRNA variants in d…
By newseditor
Posted 22 Apr
Other Top Stories
New SARS-like virus can jump directly from bats to humans, no treat…
Read more
Developing universal antibody for alphaviruses
Read more
Mutation in coronavirus protein reduces its neurovirulence
Read more
Using copper to prevent the spread of respiratory viruses
Read more
How does human enterovirus D68 enters the cell?
Read more
Protocols
A programmable targeted pro…
By newseditor
Posted 23 Apr
MemPrep, a new technology f…
By newseditor
Posted 08 Apr
A tangible method to assess…
By newseditor
Posted 08 Apr
Stem cell-derived vessels-o…
By newseditor
Posted 06 Apr
Single-cell biclustering fo…
By newseditor
Posted 01 Apr
Publications
Exploiting pancreatic cance…
By newseditor
Posted 23 Apr
Structure of antiviral drug…
By newseditor
Posted 23 Apr
Type-I-interferon-responsiv…
By newseditor
Posted 23 Apr
Selenium, diabetes, and the…
By newseditor
Posted 23 Apr
Long-term neuropsychologica…
By newseditor
Posted 23 Apr
Presentations
Hydrogels in Drug Delivery
By newseditor
Posted 12 Apr
Lipids
By newseditor
Posted 31 Dec
Cell biology of carbohydrat…
By newseditor
Posted 29 Nov
RNA interference (RNAi)
By newseditor
Posted 23 Oct
RNA structure and functions
By newseditor
Posted 19 Oct
Posters
A chemical biology/modular…
By newseditor
Posted 22 Aug
Single-molecule covalent ma…
By newseditor
Posted 04 Jul
ASCO-2020-HEALTH SERVICES R…
By newseditor
Posted 23 Mar
ASCO-2020-HEAD AND NECK CANCER
By newseditor
Posted 23 Mar
ASCO-2020-GENITOURINARY CAN…
By newseditor
Posted 23 Mar