Heterotopia are nodules or clumps of misplaced neurons that did not move to the correct location in the brain during earlydevelopment. Heterotopia are common malformations of cortical development.
Other definitions: 1  Freshman: a student who has completed fewer than 30 credit hours. 2  Sophomore: a student who has completed 30 or more credit hours. 3  Part time: a student carrying fewer than 12 credit hours in a fall or spring semester.
Best Answer: Depends a lot on the college and their system of credits. That said, 12 credit hours at a US school is full time, so half time would be 6-8 hours. That corresponds to 2-3 classes. At my school, 12 credit hours were considered full-time for Spring and Fall semesters though many people took 15.