Physiological Psych, Week 1
Physiological Psych, Week 1
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This 2 page Class Notes was uploaded by Meg Hart on Monday January 18, 2016. The Class Notes belongs to a course at a university taught by a professor in Fall. Since its upload, it has received 22 views.
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Date Created: 01/18/16
14 January 2016 Chapter 1: Branch of psychology that studies the relationship between behavior and the body (brain) Neuroscience: multidisciplinary study of the nervous system (all aspects: anatomical, chemical, physiological, developmental, etc.) Origins of Physiological Psychology o Mind-Brain Problem What is the nature of the mind and the brain? What is the relationship between the mind and the brain? o Two Philosophical Views Dualism Mind and brain belong to different worlds (non- physical world vs. physical world) The mind controls the brain by “interacting” with it Monism Mind and brain belong to the same world Physical world = materialism The mind is the “product” of physical processes in the brain o René Descartes (17 century philosopher) Dualist: mind (non-physical) body (physical) Realized the body does not matter, compared to the soul Body cannot survive or heal without the power of the soul Body of every organism (human too) is a machine Can discover how the machine is built and how it works In humans, the mind interacts with the body at a single point in the brain Pineal gland? Put emphasis on the physical explanation of behavior Provided a model of how the nervous system works Model: proposed mechanism for how something works Descartes’ Hydraulic Model Nerves are hollow tubes where a fluid (“animal spirit”) flows Pineal gland pumps the fluid through brain and nerves Mind (soul) tilts the Pineal gland to direct fluid to specific nerves specific muscles inflate (move) Can be tested! o Galvani (1700’s) and his frogs: nerves are like wires conducting electricity o Helmholtz (1800’s): how come nerves conduction speed in only 90 Ft/sec? Nature & Nurture / Heredity & Environment / Innate & Learned o Basic philosophical question driving psychology (along with mind/body problem) How much of Brain & Behavior is due to Heredity? How much of Brain & Behavior is due to the Environment? How do heredity and environment interact? o Must understand basic genetics to study brain and behavior Vocabulary Refresher o Gene: basic, smallest unit of heredity Found on chromosomes (inside the nucleus of each cell) o Humans have 46 chromosomes in 23 pairs o A gene is a portion of chromosome o A chromosome is composed of DNA Deoxyribonucleic Acid: double-stranded chain of molecules (bases): adenine, thymine, guanine, cytosine o Genes & their Effects 1) Dominant: produces its effects regardless of which gene it is paired with 2) Recessive: produces its effects only when paired with the same recessive gene on the other chromosome
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