Scientists discovered a mechanism which stops the process of forgetting anxiety after a stress event. They showed that feelings of anxiety don’t subside if too little dynorphin is released into the brain. The results can help open up new paths in the treatment of trauma patients.
Hippocampal neurons that respond to fearful stimuli relay that information to the amygdala. These neurons synchronize when memories of the stimuli are later recalled. The synchrony is critical to establish fear memories and the greater the synchrony, the stronger the memory becomes.
Researchers investigate why many of us wake in the middle of the night and dwell on our fears.
Researchers say our neural circuits could be responsible for why we find comfort in those who are similar to us and why we are often uneasy with those who might differ from us.
Fear extinction memories and feelings of reward are both stored in neurons that express the Ppp1r1b gene in the posterior of the basolateral amygdala.
A new study reports traumatic experiences can alter the brain, leaving people more vulnerable to psychological problems.