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How Social Isolation Transforms the Brain
Chronic social isolation has debilitating effects on mental health in mammals–for example, it is often associated with depression and post-traumatic stress disorder in humans. Now, a team of Caltech researchers has discovered that social isolation causes the build-up of a particular chemical in the brain, and that blocking this chemical eliminates the negative effects of isolation. The work has potential applications for treating mental health disorders in humans.
brain  neuroscience  neuropsychology 
yesterday by flyingcloud
Alcohol, dementia and cognitive decline in the elderly: a systematic review | Age and Ageing | Oxford Academic
there is some evidence to suggest that limited alcohol intake in earlier adult life may be protective against incident dementia later.
alcohol  dementia  alzheimers  neuroscience  brain 
yesterday by mdpatrick
Memory transfer between snails challenges view of how brain remembers
Memory transfer between snails challenges view of how brain remembers -
neuroscience  from twitter
2 days ago by rdr
Twitter
Memory transfer between snails challenges view of how brain remembers -
neuroscience  from twitter
2 days ago by rdr
If you can't stand the sound of people chewing, blame your brain
The AIC is buried deep in the fold separating the frontal lobe and parietal lobe from the temporal lobe of the brain. It's responsible for a bunch of mediation tasks, including managing emotional experience. It also plays a role in integrating signals from the outside world with information inside the body.

Those with misophonia not only had increased AIC and frontal lobe activity, but also in the ventromedial prefrontal cortex (vmPFC), hippocampus, and amygdala. Measurements taken of the structure of the vmPFC indicated they had thicker insulating myelin sheaths, which helps nerves carry messages.

Taken together, the evidence suggests that those with misophonia have brains that struggle to control the spread of messages associated with certain sounds.

While we all might feel a twinge of bother, having misophonia turns an annoying sound into an enraging experience, as it spreads through different parts of the brain associated with 'fight or flight' responses.
neuroscience  psychology 
4 days ago by dstarr1

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