Psychopharmacology Unit 1

Hindbrain - Myelencephalon o medulla - metencephalon Forebrain Subcortical Structures - decision making - thalamus/hypothalamus o hypothalamus = low thalamus  responsible for nervous system and regulating endocrine system  sensory processing for smell o thalamus  relay station for all sensory processing except for smell - limbic system o hippocampus  memory formation  memories NOT stored here o amygdala  stress and fear o nucleus accumbens  rewards system eg. The feeling of drugs - striatum/ basal gaglia o movement o rewards system o has been linked to Huntington's disease Forebrain - the Cortex aka Neocortex o 2-4mm thick o ~25 billion neurons o 62,000 miles of axons o 300,000,000,000,000 synapses o Wrinkles  Sulci (sulcus)  Dips  Gyri (gyrus)  Archs Other divisions of the brain - Two hemispheres o Left (e.g.)

 Logic  Anaylsis  Sequencing  Linear mathematics  Language  Facts  Think in words  Lyrics  Conputation o Right (e.g.)  Creativity  Imagination  Holistic thinking  Intuition  Datdreaming  Arts (motor skill)  Rythym  Non-verbal  Feelings  Visualization - Corpus Collosum - 4 lobes o Occipital  Back  Responsible for seeing o Temporal  Side  Hearing  memory o Parietal  Mid  Touch, senses, emotions o Frontal  Front lol  Logic, problem solving, judgment reasoning  Impulse control  Behavioural inhibition Cerebrospinal Fluid and Ventricles - CSF (125 ml) o Nourishes nerves and neurons o Circulates 5-6 times in a 24hr period o Made by the choroid plexus (500ml/ day)