Health Desk---Sept 26, 2017: While lack of sleep is a major risk factor for depression, not everyone who tosses and turns at night becomes depressed.
According to a study, individuals whose brains are more attuned to rewards may be protected from the negative mental health effects of poor sleep.
The findings revealed that students with poor quality sleep were less likely to have symptoms of depression if they also had higher activity in a reward-sensitive region of the brain.
“This helps us begin to understand why some people are more likely to experience depression when they have problems with sleep,” said Ahmad Hariri, Professor at the Duke University in North Carolina, US.
Ventral striatum helps regulate behaviour in response to an external feedback as well as reinforce behaviours that are rewarded while reducing behaviours that are not.