sensation & Perception
Terms
undefined, object
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- PSYCHOLOGICAL APPROACH
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PHENOMICAL/ NATUALISTIC APPROACHSTUDEIS OBJECTS AND EVENT THAT OCCUR NATURALLUY
- EXPERIMENTAL APPROACHE
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ALLOWS STIMULUS PRESENTAION TO BE CONTOLLED OR REPLICATEDUNTAANGLES THE CONFOUNDING VARIABLES THAT OCCUR IN NATUAL SITUAIONS
- BIOLOGICAL APPROCHES
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THE LEGION TECHNIQUEDESTROY PART OF THE NEVOUS SUSTEM AND OBSERVING BEHAVIORAL CONSEQUENCES OF LEGIONS.
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BRAIN IMAGING TECHNIQUESMRIPETFMRI
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SHOWS PHYSICAL STRUCTURESHOWS WHAT BRAIN IS DOING (INVASIVE PROCESS)PUTS THE BEST OF BOTH TOGETHER: RECORDS NEURON ACTIVIY AND FINE GRAIN DETAIL
- ABSOLUTE THRESHOLD
- THE MINIMUM STIMULATION NEEDED TO DETCT A PARTICULAR STIMULUS 50% OF THE TIME
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JNDDIFFERENCE THRESHOLD
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JUST NOTICEABLE DIFFERENCEMINIMUM DIFFERENCE BETWEEN 2 STIMULI THAT IS DETECTED 50% OF THE TIME
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MEASURING THRESHOLDSCONSTANT STIMULILIMITSADJUSTMENT
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PRESENT STIMULI OF VARYING INTENSTY RANDOMLY" "STANDARD STIMULUS/COMPARE WITH BRACJKETING INTENSITYPRESENT AS IN/DECEASE INTESITY
- WEBER'S LAW
- AMNT OF CHANGE TO PRODUCE JND X INITIAL INTENSITY / CONSTANT PORPROTONAL CHANGE
- SENSORY LOBES
FRONTALTEMPORALPARIATALOCCIPITALMOTORHEARINGSKIN SENSESVISION- ELECTRO MAGNETIC SPECTRUM
- 400-700 NANOMETERS
WAVE LENGTHS INTERACT WITH OBJECTS- POSTIONING OF EYES
- FRONT LOCATION- DIFFERENT DIMENSIONS AND RELATIVE DEPTH
- TYPES OF VISION
PERIPHIALRETINAMOVEMENT AND PRESENCE OF OBJECTSHIGH DETIL BUT MUST HAVE ILLUMINATION- 3 LAYERS OF EYE
1. F2. VT3. R- 1. FIBROUS: SCLERA AND CORNEA (WHITE PART/BUBBLE)
2. VASCULAR TUNICE: CHOROID (BLOOD SUPPLY/PIGMENTAION)3.RETINA: RETINA (TRANSDUCTION OF LIGHT ENERGY)- CORNEA
PUPIL- TRANSPARTEN, LOTS OF NERVE ENDINGS, LIGHT ENTERS AND IS BENT INWARD ONTO LENS
BLACK OPENING THAT REGULATES AMNT OF LIGHT (DEPTH OF FIELD)- IRIS
VITREOUS CHAMBER- OUTER LAYER IS PIGMENTED, INNER BLOOD VESSELS
ATTACHES TO LENS/ RETINA, NO PURPOSE AFTER TEENAGER YEARS- LENS
RETINA- BEHIND IRIS, CONVERGES DIVEGING LIGHT, CONSOLIDATGES LIGHT W/ CONVEX LENS
THIN LAYER OF CELLS THE CONVERT LIGHT TO NERVE IMPULSES- AGNOSA
- INABLITILY TO RECOGNIZE OBJECTS
- BOTTOM UP
TOP DOWN- PROCESS BASED ON INCOMING DATA
PROCESS BASED ON KNOWLEDGE- RODS
CONESACCOMIDATIONCANT RESOLVE FINE DETAIL, VISION W/LOW ILLUMINATIONCOLOR RECEPTORS AND HIGH DETAIL (HIGH ILLUMINATION)INCREASES FOCUSING POWER BY TIGHT/LOOSENING EYE MUSCHLE TO CAHNGE CURVE OF LENS TO BEND LIGHT WAVES
- FOVEA
- ONLY CONES
MACULAR DEGENERATION: OLD AGE DISEASE, DESTRUCTION OF CONES IN FOVEA- DOCTERIN OF SPECIFIC NERVE ENERGEY
- OUR PRECEPTION DEPENDS ON NERVE ENREGIES REACHING HTE BRAIN AND WHICH NEVERS ARE STIMUATED
- DARK ADAPTAION
PURKINJE- INCREASE IN SENSITITIY AS EYES REMAIN IN DARK
CONES MORE SENSITVE TO LIGHT= CONTROL VISION IN EARLY EXPOSURETRANSITION TO CONE VISION TO ROD VISION- RECEPTIVE FIELD SIZES
- VARY W/ RETINAL LOCATION & DETERMINE WHICH STIMULI WILL OPTICALLY ACTIVATE EACH CELL
CENTER FIELD ARE SMALLDISTANT FIELDS ARE LARGE BUT FAR FROM FOVEA- TYPES OF GANGLIAN
3 TYPES ( RETINAL CELLS)ONLY 2 ARE IMPORTANT- MAGNOLCELLULAR: LISTN TO PERIPHAIL , LARGE CELLS AND RECEPTORS, RODS FOUND HERE (BLACK AND WHITE)
PARVOCELLULAR: SMALL FIELDS, CONES AND COLOR FOUND HERE- OPTIC NERVE
- AXONS FROM EACH EYE COMBINE TO FORM THE OPTIC NERVE ( GANGLIAN CELLS
VISION FIELDS CORREPOND WITH OPPOSITE SIDES OF THE BRAINRT V.F.= LT. V.F.- RETINOTOPIC
- MAP OF REITIANA I CONJUCTION WI CEREBRAL CORTEX
- KITTEN EXPERIMENT
- BRAIN DEVELOPES AS FAR AS VISUAL STIMULUS EX[POSURE
- HUBEL & WIESEL
NOBEL PEACE PRIZE- simple cell-stationary line, at certan angle
comp