PHYSIOPSYCHOLOGY NOTES 1 14 14 Physiological relating to activity in the brain Ontogenetic development over life time Monism mind and brain are the same thing Dualism mind and brain are two separate things Solipism form of consciousness I alone exist in the consciousness everything else is a figment of imagination Fun facts experiment Rats love chocolate milk Most research is done on rodents must youthinize when done with Messed up brain equals messed up mind Prefontal cortex inhibits behavior not fully formed until the mid twenties Dopamine release in nucleus accumbens is like saying you re happy PHYSIOPSYCOLOGY NOTES 1 16 14 Print off action potential worksheet for Tuesday Human genome is about 30 000 bp Worm 19 000 Red and Green are the most common colorblindness Sex linked activated in one sex PKU Phenylketonuria result of a chemical build up in a person because they lack the enzyme in the liver to digest breakdown phenylalanine properly Epigenetics result of gene availability ability to turn on off in lifetimes stress will turn on certain genes Heritability factor establishes the berriance that s due to genetics correlation coefficient Obesity large schizophrenia moderate IQ little Can effect indirectly or directly Indirectly multipler effect tall kid grows up being pushed towards playing basketball Directly PKU life long CNS Central Nervous System Neurons glial cells Dentrites reach out to receive information from other source i e other neurons Axons transmits neurons Dendritic spins the more spins the more information it can receive Neurons eat glucose metabolic process that requires oxygen TWO MAJOR TYPES OF NEURONS Censor Neurons receptors specialized highly sensitive to certain kinds of information Ex Light stimulates visual neurons Motor Neurons receive from other neurons that conduction information to the soma leads to impules Ex Kicking Interneuron intrinsic all neurons are in a single structure Afferent one carries information to Efferent carries away from neurons Glial Cells don t transmit information sometimes do exchange chemicals same amount of the space Glial cells are a 10th as big as neurons Astrocite pick up chemicals that weren t used and send back to where they came from fire in waves help clear up waste material help dilate blood vessels need oxygen Radial glial cells type of astrocite different early on help guide the migration of neurons until they end up where they should help with axon development convert to astrocites some convert to neurons Micro glial cells remove waste very good at finding and removing bacteria immune cells in the brain Oligodendrocytes Central Nervous System CNS Schwann cells Peripheral Nervous system PNS Myelin sheath information transmitted faster in neurons White matter myelin matter Cells are less differenciated reproduce less often than highly differenciated cells skin Neurons are the most differientiated cells in the body Once you get your neurons that s it Two spots in brain where neurons are produced Olfactory bulb Hippocampus Brain can change shape action of dendrite depends on shape Alcohol stunts dendrite branching won t kill Brain cancer glial cell cancer Blood brain barrier allows some chemicals to get in you brain very easily keeps some out some cross the barrier sooner lipids fats cross easily heroin and cocaine are in same class heroine gets across BBB faster Endothelial cells line blood vessel wall tightly not much can get through Area postremia vomit reflex back of head important pressure trauma HBP Weakens BBB temporarily it can rebuild itself