Psychostimulants increase dopamine levels, enhancing task-relevant cortical signals by acting on the striatum and the difference in dopamine synthesis capacity in the striatum explains the variability in the drugs' cognitive effects.
Premenstrual dysphoric disorder (PMDD) is a severe mood disorder that affects one in twenty women. PMDD can have a debilitating impact on the lives of sufferers. Researchers investigate PMDD and evaluate treatment options for sufferers.
Examining the gut microbiome of those with major depressive disorder, researchers identify the presence of the bacteria Faecalibacterium prausnitzii as being responsible for the functional discrepancies between healthy individuals and those with MDD.