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Brain Transformation Caused by Social Isolation
Brain Transformation Caused by Social Isolation0Mammals undergoing continuous social isolation can experience debilitating effects on their mental health. In particular, this can lead to depression and post-traumatic stress disorder in humans. A team of researchers from the California Institute of Technology has discovered that social isolation builds up a particular chemical in the brain, and the negative effects of isolation were eliminated when this chemical was blocked.
The research team, led by postdoctoral scholar Moriel Zelikowsky, confirmed and extended previous observations, showing behavioral changes in mice that underwent social isolation. These mice showed increased aggressiveness towards unfamiliar mice, persistent fear, and hypersensitivity to threatening stimuli. For example, when the mice encountered a threatening stimulus after having been socially isolated for two weeks, they remained frozen in place long after the threat had passed.
Previously, the laboratory had discovered that tachykinin, a neurochemical, causes aggression in socially isolated flies. The same researchers found that chronic isolation leads to an increase in a specific substance. When they administered a drug that chemically blocks the substance, the stressed mice behaved normally.

Hanna Jeong
Staff Reporter
 
인쇄기능입니다.
1. Where are the researchers from?
2. What animals did the researchers use?
3. What is tachykinin?
 
1. Can you summarize the study and what it found?
2. What do you think of this discovery? Does it make sense?
3. How does this study/discovery relate to humans and our social lives? 4. Do you think it is okay to give people medicine to control their behavior?
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