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.
In many programs this means that you would have to be enrolled in at least three of the five required courses scheduled in a term to be considered full time. If you take less than 60% of the course load, then you are considered a part-time student. While most classes are delivered between 8:30 am and 6:30 pm, a student with a 100% course load could expect to be in class about 30 hours per week at most. This can vary from program to program and from season to season depending upon your field of study.