<Li> the parafacial zone (GABAergic neurons), located within the medulla oblongata </Li> <Li> the nucleus accumbens core (GABAergic medium spiny neurons; specifically, the subset of these neurons that expresses both D2 - type dopamine receptors and adenosine A receptors), located within the striatum </Li> <Li> the ventrolateral preoptic area (GABAergic neurons), located within the hypothalamus </Li> <Li> the lateral hypothalamus (melanin - concentrating hormone - releasing neurons), located within the hypothalamus </Li>

The period (through point to trough point) of a slow wave should not be less than