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Clinical

How a region of the cerebellum plays a crucial role in split-second decisions

Staff Writer
Staff Writer 5 years ago
Updated 2020/09/02 at 12:06 AM
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A research article published in Nature Communications highlights the crucial role the cerebellum plays in sensorimotor and associative learning.

According to researchers at the University of Colorado Anschutz Medical Campus, a region of the cerebellum they studied on rodents is implicated in split-second decision making.

For the study, researchers turned to the molecular layer interneurons (MLIs) located in the cerebellum.

“We used two-photon microscopy to study the role of ensembles of cerebellar MLIs in a go-no go task where mice obtain a sugar water reward if they lick a spout in the presence of the rewarded odorant and avoid a timeout when they refrain from licking for the unrewarded odorant,” the co-authors stated in the findings.

With learning, the reward odor led to a substantial increase in MLI calcium responses, however, when the stimuli were reversed, the MLI flipped responses to the odors.

“Mice took a longer time to refrain from licking in the presence of the unrewarded odorant and had difficulty becoming proficient when MLIs were inhibited by chemogenetic intervention,” the co-authors explained in their article.

“Our findings support a role for MLIs in learning valence in the cerebellum.”

Photo: depositphotos

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TAGGED: cerebellum, molecular layer interneurons, cognition
Staff Writer September 1, 2020
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