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38 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Psychophysics Methods |
Method of limits Method of constand stimuli Method adjustment Magnitude estimation Signal detection |
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Method of limits |
Participants are shown stimuli at increasing and decreasing intensities and asked when they can detect the stimuli |
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Constant stimulu |
Participants are shown a set of stimulu at random intensities and asked when they can detect stimuli |
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Method of adjustment |
Participants adjust intensity of the stimuli to find their threshold |
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Magnitude estimation |
Participants are assign a numerical judgment to their perception of a stimulus, compared to a standard stimulus |
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Signal detection |
A way of looking at data that allows more nuanced understanding of performance. Tells how ppl behave in certain contexts Measures sensitivity |
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PET con and pro |
Good spacial resolution Poor temporal resolution (~couple of minutes) |
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fMRI pros |
Excellent spacial resolution Good temporal resolution (~ couple of seconds) |
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ERP |
Poor spacial resolution Excellent temporal resolution (~milliseconds) |
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Phenomenology |
The subject experience of perception |
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3 Previews of perception |
Realist approach relativist approach constructivist approach |
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Realist approach |
The environment is rich in info. we only detect it to perceive it |
Pro: uses sensation to inform perception Con: optical illusions exists and prior knowledge effects perception |
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Relativist approach |
The information in our environment is adequate for perception our perceptual system makes everything itself |
Pro: prior knowledge and info influence perception. Con: reality exists. When in disagreement it perception it is easily explained |
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Constructivist approach |
InFormation from the environment in or old knowledge or integrated for us to perceive the environment |
Mix of realist and relativist. Helmholtz unconscious inference and most modern views of perceotion. Used to get info from real world.
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Bottom up processing |
Processing that begins at the level of sensory stimulus information travels from the real world through receptors and is interpreted through perceptual processing |
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Top down processing |
Processing that begins at the level of cognition in context we know what information to expect in interpret incoming sensory information with that context |
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Sensation |
Detecting information |
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Perception |
Interpreting information |
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Transduction |
The process of converting physical stimuli into an electro chemical singnal |
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Phenomenology |
Or subject experience of perception |
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Qualia |
Bits of perception or subbjective, conscious experience. |
The pain of a head ache |
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Pre frontal cortex |
Memory Intelligence Concentration Temper and personality |
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Occipital |
Right:visual information that comes from left Left. Visual info from right side Visual info from outside world Influence color and shape processing |
Back of brain |
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Temporal lobes |
Right side aides visual memory. Help remember faces and previous objects Left involved in verbal memory Allows us to enterprit emotions and action in rear part of temporal lobe. |
Sides of brain. Ear level |
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Frontal lobe |
Voluntary movement, speech, intellectual thought and certain behaviors |
Largest |
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Poriatal lobes |
interprets signals from all areas of the brain symostniously . They have access to hearing vision memory and motor sensory skills |
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Subcortical brain structures |
Brain stem *medulla *reticular formation Thalamus Cerebellum Limbic system *amygdala *hypothalamus *hippocampus |
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Brain stem |
Medulla: breathing and heartbeat Reticular formation: inside brain stem. Relays sensory info and controls arousal |
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Thalamus |
Sensory switchboard Receives info from all senses |
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Cerabellum |
Coordinates movement Spatial coordination/knowledge |
Base of brain |
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Lymbic system |
Amygdala: aggression, fear, fight or flight Hypothalamus: homeostasis, hormone release pleasure via dopamine release Hippocampus: memory. Under temporal lobe Basil gangilia: groups of structures responsible for planning and producing movement. |
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Glial cell |
Mos abundant type of cell Surrounds neurons and provides support |
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Polorized |
Neuron is at rest |
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Action potential |
Ion channel opens. Positive icons flood the axon Action potential releases neurotransmitters Axon inside charge is negative |
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Excitatory synapses |
Encourage post sypnatic neuron to become depolorized |
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Inhibitory |
Synapses tell the post synaptic neuron to remain polarized |
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Nervous system |
Central Peripheral |
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Central nervous system |
Brain and spinal cord |
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