SENSATION Flashcards
OCCURS WHEN SPECIAL RECEPTORS IN THE SENSE ORGANS (EYES,EARS,NOSE,SKIN,TASTE BUDS) ARE ACTIVATED, ALLOWING VARIOUS FORMS OF OUTSIDE STIMULI TO BECOME NEURAL SIGNALS IN THE BRAIN
SENSATION
PROCESS OF CONVERTING OUTSIDE STIMULI SUCH AS LIGHT INTO NEURAL ACTIBVITY
TRANSDUCTION
SPECIALIZED FORMS OF NEURONS THE CELLS THAT MAKE UP THE NERVOUS SYSTEM
SENSORY RECEPTORS
INSTEAD OF RECEIVING NEUROTRANSMITTERS FROM OTHER CELLS THESE RECEPTOR CELLS ARE STIMULATED BY DIFFERENT KINDS OF ENERGY
SENSORY RECEPTORS
THE RECEPTORS IN THE EYES ARE STIMULATED BY
LIGHT
THE RECEPTORS IN THE EARS ARE STIMULATED BY
VIBRATIONS
TOUCH RECEPTORS ARE STIMULATED BY
PRESSURE OR TEMPERATURE
RECEPTORS FOR TASTE AND SMELL ARE TRIGGERED BY
CHEMICAL SUBSTANCES
THE RECEPTORS TRANSDUCES THE PHYSICAL INFO INTO ELECTRICAL INFO IN DIFF WAYS, WHICH EITHER ___ OR ____ THE CELL CAUSING IT TO FIRE MORE OR FIRE LESS BASED ON THE TIMING AND INTENSITY OF THE INFO ITS DETECTING FOM THE ENVIRONMENT
DEPOLARIZES OR HYPERPOLARIZES
WHO STUDIES THE SMALLEST DIFFERENCE BETWEEN TWO WEIGHTS THAT COULD BE DETECTED
ERNST WEBER (1795-1878)
THE SMALLEST DIFFERECE BETWEE TWO STIMULI THAT’S DETECTABLE 50% OF THE TIME
WEBER’S LAW OF JUST NOTICEABLE DIFFERENCES (JND OR THE DIFFERENCE THRESHOLD)
MEANS WHATEVER THE DIFFERENCE BETWEEN STIMULI MIGHT BE, ITS ALWAYS CONSTANT
WEBER’S LAW OF JUST NOTICEABLE DIFFERENCES (JND OR THE DIFFERENCE THRESHOLD)
EXPANDED WEBER’S WORK BY STUDYING CALLED ABSOLUTE THRESHOLD
GUSTAV FECHNER (1801-1887)
LOWEST LEVEL OF STIMULATION THAT A PERSON CAN CONSCIOUSLY DETECT 50% OF THE TIME THE STIMULATION IS PRESENT
ABSOLUTE THRESHOLD
ABSOLUTE THRESHOLD: CANDLE FLAME AT 30MILES ON A CLEAR, DARK NIGHT
SIGHT
TICK OF A WATCH 2O FT AWAY IN A QUIET ROOM
HEARING
DROP OF PERFUME DIFFUSED THROUGHOUT A THREE-ROOM APARTMENT
SMELL
1 TSPN OF SUGAR IN 2 GALLONS OF WATER
TASTE
BEES’S WING FALLING ON THE CHEEK FROM 1 CM ABOVE
TOUCH
STIMULI THAT ARE BELOW THE LEVEL OF CONSCIOUS AWARENESS
SUBLIMINAL STIMULI
MEANS THRESHOLD
LIMIN
MEANS BELOW THE THRESHOLD
SUBLIMINAL STIMULI
STIMULI JUST STRONG ENOUGH TO ACTIVATE THE SENSORY RECEPTORS BUT NOT STRONG ENOUGH FOR PEOPLE TO BE CONSCIOUSLY AWARE OF THEM
SUBLIMINAL STIMULI
SUBLIMINAL STIMULI ACT UPON THE UNCONCIOUS MIND, INFLUENCING BEHAVIOR IN A PROCESS OF
SUBLIMINAL PERCEPTION
THE WAY THE BRAIN DEALS WITH UNCHANGING INFORMATION FROM THE ENVIRONMENT
HABITUATION
SENSORY RECEPTORS ARE STILL RESPONDING TO STIMULATION, THE LOWER CENTER OF THE BRAIN FILTER SENSORY STIMULATION AND IGNORE OR PREVENTT CONSCIOUS ATTENTION TO STIMULI THAT DO NOT CHANGE
HABITUATION
THE RECEPTOR CELLS BECOME LESS RESPONSIVE TO AN UNCHANGING STIMULUS AND THE RECEPTORS NO LNGER SEND SIGNALS TI THE BRAIN
SENSORY ADAPTATION
UNCHANGING INFORMATION FROM THE SENSORY RECEPTORS IS EFFECTIVELY IGNORED
SENSORY ADAPTATION
