MEASURING OUR SENSES ___________________: A field of study that draws upon physics and psychology to study the sensitivity of our senses PHYSICS + PSYCHOLOGY.
Jan 18, 2018
THRESHOLDS 1)________________________: The smallest quantity of physical energy that can be reliably detected by an observer RELIABLE = Detection _____ of the time EXAMPLE: What’s the smallest line you will read correctly 50% of the time?
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MEASURING OUR SENSES___________________: A field of study that
draws upon physics and psychology to studythe sensitivity of our senses
PHYSICS+
PSYCHOLOGY=
THRESHOLDS1) ________________________:
The smallest quantity of physical energy that can be reliably detected by an observer
RELIABLE = Detection _____ of the time
EXAMPLE:What’s the smallest line you willread correctly 50% of the time?
NORMAL SENSORY ABILITIESVISION: A candle flame on a clear, dark night
from _____ miles away.HEARING: A ticking watch in a perfectly quiet
room from _____ feet awayTASTE: A teaspoon of sugar diluted in _____
gallons of waterSMELL: A drop of perfume diffused through a
____-room apartmentTOUCH: Feel the wing of a bee falling on your
cheek from a height of ______
THRESHOLDS2) _________________________:
The smallest difference in stimulation that can be reliably detected when comparing two things
A.K.A. Just Noticeable Difference
SENSORY RESPONSES________________________
The reduction or disappearance of sensory responsiveness that occurs when a stimulation is unchanging or repetitious
SENSORY ADAPTATIONVERY USEFUL!
►Feeling the watch on your wrist► Swimming in a cold lake
VERY HARMFUL!You might no longer smell a gas leak thatyou noticed upon first entering thekitchen.
Ted, your house smells
like burnt hair!
SENSORY RESPONSES_______________________
The absence of normal levels of sensory stimulation
Uhhh, hello?
Anyone?
STUDIES IN SENSORY DEPRIVATION
MALE VOLUNTEERSIsolated from all patterned sight and sound
• Vision was restricted by a translucent visor• Hearing was restricted by a U-shaped pillow and by
background noise from an A/C unit or fan• Touch was restricted by cotton gloves and cardboard
cuffs
Given brief restroom eating breaks BUT…Spent their entire day laying in bed, doing
Nothing!
RESULTSWithin a few hours, many felt edgy
– Some were so disoriented, they quit the first day!– Those who remained became confused, restless,
and grouchy
– Many reported bizarre visionsExample: Squadron of marching squirrelsor a procession of marching eyeglasses
– Very few men were willing to remain in the study for more than 2 or 3 days
SENSORY RESPONSES______________________
Occurs when there is excess stimulation; leads to fatigue and mental exhaustion
EXAMPLE Finals Week
SENSORY OVERLOADWE CAN ONLY FOCUS ON ONE THING AT A
TIME!!!
_______________________
A.K.A. Cocktail Party Effect
What Do You Remember?1. What is the field of study that focuses on
measuring the sensitivity of our senses?2. There are billions of these in our bodies
which carry electrical messages to the brain.3. What does APA stand for?4. The smallest quantity of physical energy that
can be reliably detected is called the ____________.
5. A normal threshold for seeing candle flame on a clear, dark night is _____ miles away.
What Do You Remember?6. Someone let off a stink bomb in the hallway. At first, the smell is horrendous but after a while you stop noticing it…what is this called?7. Becoming overwhelmed by the amount of things on your schedule is called...8. The smallest difference in stimuli which can be reliably detected is known as ________.9. Another name for the Cocktail Party Effect.10. Who ran the Stanford Prison Experiment?
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