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71 Cards in this Set
- Front
- Back
The body's information system is built from billions of interconnected cells called neurons.
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Neaural Communication
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Parts of the neuron.
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Dendrites
Cell body Axon Melin sheath Terminal branches Synapse |
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A brief electrical charge that travels down an axon.
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Action Potential
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The space between the end of the axon of the sending neuron and the dendrite of the receiving neuron.
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Synapse
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(chemicals) releasted from the sending neuron travel across the synapse and to the receptor sites on the receiving neuron.
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Neurotransmitters
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The body's information system is built from billions of interconnected cells called neurons.
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Neaural Communication
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Process in the synapse where extra nerotransmitters are reabsorbed into the sending neurons.
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Reuptake
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Pathways are invovled with mood regulation
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Serotonin
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Pathways are invovled with diseases such as schizophrenia and Parkinson's disease.
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Dopamine
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Enables muscles activity and seem to be low for those with Alzheimer's disease.
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Acetylcholine
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Neurotransmitters related to pain and "good feelings" and pain relief.
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Endorphins
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Similar reaction, doesn't fit exactly.
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Agonist
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Inhibits, blocks action.
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Antagonist
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The body's slower communication system
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The endocrine system
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Chemicals sythesized by the endocrine glands that are secreted in the blood stream
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Hormons
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Secretes many different hormons, some of which affect other glands.
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Pituitary gland
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Affects metabolism, among other things
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Thyroid gland
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Helps regulate the level of calcium in the blood.
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Parathyroids
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Inner part called the medulla helps trigger the fight or flight respons
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Adrenal Glands
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Regulates the level of sugar in blood.
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Pancreas.
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We detect physical energy from the envioronment and convert into neutral signals.
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Sensation
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We select, organize and interpret our sensations.
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Perception
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This beins with sense receptors and works up to the level of the brain.
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Bottom-Up Processing
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Iformation processing guided by higher-level mental processes as we construct perceptions, drawing on our experience and expectations
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Top-Down Processing
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Minimum stimulation needed to dectect a particular stimuls fifty percent of the time.
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Absolute Threshold
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Minimum difference between two stimuli reqauired for detection fifty percent of the time.
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Difference Threshold
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Two stimuli differ by constant minimum percentage to be perceived as different.
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Weber's Law
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Transparent tissue where light enters the eye.
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Cornea
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Muscle that expands and contracts to change the size of the opening (pupil) for light.
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Iris
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Area that focusses on the light rays on the retina.
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Lens
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Contains sensory receptors taht process visula information and alerts the optic nerve
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Retina
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Area of the retina where the focus of the light ray produce the closest image
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Fovea
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nerve that transmits information from the retina the brain.
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Optic Nerve
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The process by which the lens changes shape to help focus near or far objects on the retina.
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Accomidation
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Irregular curvature of the cornea or lens.
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Astigmatism
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Is a degenitive disorder of the eye in which structural changes with in the cornea cause it to thin and change to a more conical shape that its normal gradual curve
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Keratoconus
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Darkening of lens--old age and UV radiation
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Cataracts
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Increase pressure in eye, because it's not being drained properly.
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Glaucoma
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Back of eye coming lose; causes you to lose use of retina
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Retinal Detachment
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Pieces of veteras that float around; unless you have a lot, nothing to worry about.
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Floaters
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Leading cause of blindness.
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Age-Related Macular Degneeration
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Optic nerves connect to the thalmus in the middle of the brain, and the thalmus contains the visual cortex.
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Visual information processing
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Nerve cells in teh visual cortect respond to specific features, such as edge, angles and movement
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Feature Detection
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Processing several aspects at the same time. The brain divides a visual scence into subdivisions such as; color, depth, form, movement, etc.
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Parallel Processing
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Mind to mind communication
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telepathy
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Perception of remote events, such as sensing a friends house on fire
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Clairvoyance
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Perceiving the future
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Precognition
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A relatively permanent change in an organism's behavior do to experience
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Learning
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Tw events occur together
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Classical Conditioning
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Response followed by consquence
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Opperant Conditioning
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Russian physiologis who eluciated classical conditioning.
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Ivan Pavlov
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The initial learning stage in classsical conditioning.
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Acquisition
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When US does not follow the CS, CR begins to decrease and eventuall causes extinction
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Extinction
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Tendency to respond to stimuli similar to the CS.
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Generalization
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Cosidered consciousness unimportatn for the scientific study of psychology.
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Watson
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Ealy behaviorists believed tht learned behaviors could be reduced to
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mindless mechanisms
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We learn to fear somethings easier than others.
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Biological predisposition
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Found that for cats rewarded behaviors were likely to occur again, and he called this law of effect.
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Edward Thorndike.
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Deserves credit for the discovery and understanding of operant condtioning type of learning
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B.F Skinner
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Box that comes witha bar or key that an animal manipulates to obtain a reinforcer liek food or water
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Operant Chamber or Skinner Box
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Any event that strengthens the behavior it follows.
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Reinforcement
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Add a deseirable stimuls
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Positive Reinforcement
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Remove an averse stimuls
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Negative Reinforcement
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And innately reinfocing stimulus like food or drink.
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Primary Reinforcer
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A learned reinforcer that gets is reinforcing power therough association with the primary reinforcer.
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Secondary (Conditional) Reinforcer.
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Reinforces the desired response each time it occurs.
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Continuous Reinforcer
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Reinforces the desired response only part of the time
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Partial Reinforcement
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Reinforces a response only after a specified number of responses
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Fixed Ration Schedule
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Reinforces a response after an unpredictable number of responses
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Variable Ratio Schedule
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Administer an averse stimulus
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Positive Punishment
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Withdraw a desireable stimuls
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Negative Punishment
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