Politics News : Here’s Why Our Body Freezes Momentarily When Introduced to Potential Threat – News18
Politics News :
A chemical produced by nerve cells to allow transmission of signals between them, called serotonin, triggers a startle response, freezing the body momentarily in response to a potential threat, according to a new study.
The researchers, including those from Columbia University in the US, manipulated the levels of serotonin — and another chemical called dopamine — in the ventral nerve cord (VNC) of fruit flies, which is similar to the vertebrate spinal cord.
They analysed the steps taken by the insects on a special type of glass, and monitored how they moved.
The findings of the study, published in the journal Current Biology, revealed that when a fruit fly experiences an unexpected change to its surroundings — such as a sudden vibration — the release of serotonin helps to temporarily stop the fly in its tracks.
“We witnessed serotonin’s biggest effects when the flies experienced rapid environmental changes. In other words, when they were startled,” said study co-author Clare Howard from Columbia University.
The study offered insights into the