PSY290H1 Lecture 4: Lecture 4 - Neurochemistry continued
Document Summary
Excitatory (allows na+ and some k+ in: nicotinic receptors o o. Will only feel effects of nicotine if goes into the brain. Ex = ventral tegmental area, nucleus accumbens: first 2 part of the dopamine"s reward and reinforcement. Substantia nigra and striatum behavior (not prominent in humans) Facilitates dopamine production and increases in motor: behavioral effects o o o o o o. Derived from the extracts of the opium poppy seeds. Ex = morphine, codeine (also found in poppy sac), heroin (gets into brain quicker and metabolized in brain the same way as morphine), methadone (synthetic form), oxycodone: our brains also make opiates o o. Ex = endorphins, enkephalins, dynorphins: 3 types of opiate receptor subtypes: o. The addicting drugs bind with high affinity with the "mu" receptors www. notesolution. com o o. Kappa () o: found in various regions of the brain. Pag (part of the brain stem) and spinal cord effects (interesting fact)
