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| Bottom up processing, top-down processing, sensorimotor integration, emergent processing |
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| Perception you cannot predict |
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| environmental stimulus->attended stimulus->timulus on receptors->transduction->processing->perception (cyclical) |
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| action->environmental stimulus->attended stimulus->stimulus on the receptors->transduction |
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| unique interaction of senses to create an unexpected perception |
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| brain activity is connected to consciousness |
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| Ecological, Physiological, psychophysical |
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| Situate perception in natural history, habitat |
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| Identify physiological mechanisms |
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Definition
| Quantify stimulus-perception relationship |
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Definition
| Have neural mechanisms that reflect their physical characteristics (nose and paws) |
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| Excitatory Post Synaptic Potential (EPSP) |
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Definition
| less negative (toward 0 millivolts) changes in electrical status) |
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| Inhibitory Post Synaptic Potential (IPSP) |
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Definition
| more negative than -70 millivots |
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Term
| During resting period (or potential)... |
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Definition
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| Why cells are semi-permeable... |
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Definition
| B/c if they were completely permeable, concentration gradient would move from higher to lower concentration. |
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Definition
| inhibtory event, shows that light has been absorbed (more negative) |
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Definition
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| The bigger the hyperpolarizig stimulus... |
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Definition
| the greater teh graded potential |
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| Difference between perception and recognition... |
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Definition
| you can perceive without recognition |
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Term
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Definition
Retinal microspectroscopy- receptors.
Rod photoreceptor->record change in membrane with a microelectrode |
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Term
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Definition
| fluorescent tracing- inject _ into a cell, tracer cell will diffuse into the cell and can use to follow it. |
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Definition
fMRI (functional Magnetic Resonance Imaging)
-live scan that higlights brain activity, blue and purple means not so much brain activity
-statistical composite, subtraction technique where computer takes each pixel and sampled frequently at that point, the computer subtracts the reading of the pixel from the ones around it.
-functional circuits, not localized function |
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Term
| Neurologist vs. neuropsychologist |
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Definition
Neurologist: physician with MD, can do surgery
neuropsychologist: non-invasive studying of the neural system (no surgery) |
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Definition
Separation of the 2 hemispheres, severing the corpus collusum
-only for people with severe epilepsy |
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Definition
| measures glucose utilization |
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Term
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Definition
| Subjects controls the changes in signal or stimulus |
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| Method of Constant Stimuli |
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Definition
| stimulus intensity in which the subject detects the stimulus 50% of the time. |
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Definition
| ascending and descending, average of switch points between detection of signal |
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| Difference threshold or limen |
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Definition
amount by which 2 stimuli differ in order to be perceived as different.
-standard and comparison stimulus
-absolute value is based on standard measurement used |
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Definition
| K=difference limen (units)/standard (units) |
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| Direct Magnitude estimation |
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Definition
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Definition
| KS^N, most important factor in changing stimulus and corresponding measurement |
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Definition
| electromagnetic radiation within the visible spectrum, photons |
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Definition
semantic differentials: language, words
narrative (phenomenological)- "tell me what you think when you see this" |
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Definition
Noise or noise plus signal
ROC: Receiver operating characteristic |
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Term
| Payoff matrix or noise in background |
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Definition
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Term
| 2 most important things for Signal Detection Theory |
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Definition
Response criterion: (Beta) Subjective intensity required to trigger a "yes" response
Sensitivity: (d') avg. difference between N and S+N in subjective intensity |
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Term
| Conservative Beta: Liberal Beta |
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Definition
| Response criterion is higher: response criterion is lower |
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Term
| When you increase sensitivity (d')... |
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Definition
the rate of false alarms stays constant
-d'=0 when hits and false alarms are the same |
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Term
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Definition
-Hypothesize about sensitivity and response criterion
-measure or manipulate variables
-run N and S+N trials
-collect "yes" or "no" data for each trial |
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| Measures to plot when doing ROC... |
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Definition
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| Most sensitive to movement.. |
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