Researchers have identified a second dopamine-driven "clock" in the brain that works alongside the biological 24-hour cycle, ...

Depression makes ... natural daily rhythm of most biological functions, including patterns of secretion, release, and activity of many neurochemicals in the brain. Sleep deprivation is thought ...

As the biological seat of mental life ... lower white matter integrity in others. People with depression have also shown functional brain differences in studies, such as reduced activation ...

Traditionally, psychoanalytic theory emphasized the extent to which biological ... less to say about sex differences in loss experiences hypothesized to predispose to depression.

Women who develop postpartum depression (PPD) may have distinct neuroactive steroid levels during the third trimester of ...

Shorter protective caps on chromosomes called telomeres, a proposed marker of accelerated biological cell aging, may be associated with an increased risk of stroke, dementia and late-life depression, ...

There is no single cause of depression in any age group. Some research indicates that there could be a genetic link to the disease. However, biological ... chemicals in the brain (such as ...

A new study, led by USC Mark and Mary Stevens Neuroimaging and Informatics Institute (Stevens INI), will explore structural ...

Using computational models, the researchers studied how the brain's reward-learning system functions in those with depression, especially among individuals experiencing anhedonia, the inability to ...

An experimental treatment for depression that triggers seizures with magnets significantly improved mental health in patients ...

Gender Differences in Depression. MedGenMed 1(2), 1999 ... narrowly defined factors. Further, biological state or trait markers for mood disorders are relatively few, and of unclear specificity ...