Pt 2 120

tasnimjaisee's version from 2017-05-29 14:43


Question Answer
Sensationphysical energy emitted by physical objects
Sense organs5 senses & internal body tissues
PerceptionMental operations organizing sense impulses into meaningful patterns
Sense receptorsTravel and send messages to sensory neurons in PNS
doctorine of specific nerve energiesdifferent sensory modalities exist as signas recieved by sese organs stimulate different nerve pathways leading to different areas of the brain
who created doctorine of specific nerve energiesMuller, 1826
Absolute threshholdsmallest force that can be detected
Absolute threshholdsmallest difference between 2 forces that can be detected
Single detection theorydivides sensory detection into sense process and detection process
Sensory adaptationreduced response when stimulation is repeatitive
Selective attentionselective aspects of enviornment and blocking out the others
intentional blindnessfailure to perceve something because of not attending to it
HueWavelengths, distance between crests, brings colour
BrightnessWave amplitudes, height of waves, brings intensity
SaturationWidth of wave, complexity of light to dark
When there is one single waveit is said to be pure
CorneaTransparent, protects eye and bends light behind lens
LensChanges shape (curved) to focus lights that are close or far
Irismuscles that control amount of light that gets in the eye
Pupilsurrounded by iris, widens in the dark vs dilates in light
RetinaTissue lining back of eye containing rods and cones
Rods120-125, perphery of retina, high sensitive,
Cones7-8 million, center of retina, low sensitive, controls color
dark adaptationreceptors become maximally sensitive to dim light
ganglion cellsrods and cones connected by synapse to bipolae neurons comminicating with gang cells. Axons of these cells create the optic nerve whichs transmits information to brain
Optic diskPlace where optic nerve leaves eye, no cones or rods are found
Why are we unaware of blind spotsimage hits non-blindspot in other eye, our eyes move too fast and picks up the image, brain fills the gaps
How does the brain respond to simple features like spots of dark and lightGanglion cells and neurons in thalamus
Feature detector cellsvisual cortex parts that respond to complex features,
Who figured out feature detector cells?Huber and wisel, different neurons were sensitive to different patterns
Trichromatic theoryFirst level of processing in retina, 3 cones responding to blue, green and red
Most colour bind people should be calledcolour deficient
opponent process theoryDue to after image, added yellow into a spectrum. They all have opposite pairs ex. B/Y and R/G
GestaltGerman for form or configuration
Gestalt principlesbrain's sense organization into meaningful units and patterns
Types of GestaltsProximity, Closure, Similarity, Continuity
ProximityThings that are near each other gets grouped together
ClosureBrain fills gaps to complete pictures
SimilarityThings that are alike tend to be percived into belonging together
ContinuityLines and patterns tend to be continuing in time/space
Bincular cuesVisual cues to depth and distance using 2 eyes, up to 15 meters
ConverganceThe turning inwards of eyes, to focus on inwards objects, closer the object more convergance
Retina disparityslight difference in lateral serpation in 2 objects between 2 eyes
Monocular cuesOne eye alone, interposition and linear perspective
interpositionseeing 1 object blocking another and realizing the first is closer to yourself
liner perspective2 lines converging; realizing depth, can be influenced by emotion too
Perceptional consistancyobjects are stable despite changes in sensory patterns, shape, location, size, brightness, colour
LoudnessIntensity of wave pressure, amplitude measured in bells which folow logs
Pitchrapidly the air vibrates
TimbreQuality of sound determined by waves widths
Organ of CortiIn cochlea with hair cells as hearing receptors
Cochleasnail shaped fluid filled organ with hair cells on basilar membrane
Papillaebumps on tounge for tastebuds
offlocationsense of smell
semicircular canalskeeps balance
primary vs. secondary reinforcerswhen to give awards
3 box modelshort/long term, sensory
procedural vs. declaritive memorieshow vs. that
mnemonicsenhance retention