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Certain smells may influence brain cells to make decisions - Video

Published On 2024-02-08T09:00:45+05:30  |  Updated On 8 Feb 2024 9:00 AM IST
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Overview

The University of Colorado Anschutz Medical Campus researchers have discovered that odors stimulate specific brain cells that may play a role in rapid `go, no-go’ decision making.

The study was published online on 6th February 2024 in the journal Current Biology.

The scientists focused on the hippocampus, an area of the brain crucial to memory and learning. The so-called `time cells’ played a major role in hippocampal function but their role in associative learning is not well-known.

“These are cells that would remind you to make a decision – do this or do that,” said the study’s senior author Diego Restrepo, PhD, a neuroscientist and professor of cell and developmental biology at the University of Colorado School of Medicine.

The researchers observed that when mice were given the choice of responding to a fruity smell by licking on a spout that delivered sweet water, they quickly learned to lick the fruity smell as opposed to the smell of mineral oil.

“They have to associate the odor with the outcome of what they are doing so that’s why they learn decision making,” said Ming Ma, PhD, a first author of the study and a senior instructor in cell and developmental biology at the CU School of Medicine. “When it’s a fruit odor, they lick and get a reward. When it’s mineral oil they stop licking.”

“The more they learned, the more the cells were stimulated leading to more rapid decoding of the odors and allowing the mice to quickly become proficient at choosing the fruity smell,” said Fabio Simoes de Souza, DSc, another first author of the study and an assistant research professor in cell and developmental biology at the CU School of Medicine.

The catalyst for the decision-making is the odor which travels up the nose sending neural signals to the olfactory bulb and to the hippocampus. The two organs are closely connected. The information is swiftly processed and the brain makes a decision based on the input.

The study expands current knowledge of what’s involved in decision-making in the brain, specifically those quick go, no-go decisions that mice and humans make all the time.

“The hippocampus turns on decision-predicting time cells which would give you a hint of what to remember. In the past, time cells were thought to only remind you of events and time. Here we see memory encoded in the neurons and then retrieved instantly when making a decision.” Restrepo added.

Reference: https://www.sciencedirect.com/science/article/pii/S0960982224000216?via=ihub

Speakers

Anshika Mishra

Anshika Mishra is a dedicated scholar pursuing a Masters in Biotechnology, driven by a profound passion for exploring the intersection of science and healthcare. Having embarked on this academic journey with a passion to make meaningful contributions to the medical field, Anshika joined Medical Dialogues in 2023 to further delve into the realms of healthcare journalism.

Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751
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