My latest blog post is about the cognitive aspects of mania, which is the "up" phase of bipolar mood disorder. One of the interesting things about mania is that it shows a seasonal pattern -- basically the opposite of seasonal depression in the fall -- and tends to peak right around now in the early spring. It is also associated with artistic creativity, despite other very negative effects like impulsivity and suicide risk. https://sites.google.com/view/two-minds/blog