Intro to Sensation and Perception Flashcards
Propreoception
Helps us perform complex movements, very important in athletics
Why are predators’ eyes on the front of their head?
Allows for 3D vision
Why are preys’ eyes on the sides of their head?
Allows them to see more area beside/behind them to prevent being sneakily attacked
Sensation
Ability to detect differences in our external environment
Perception
The understanding of what is detected in our external environment
What are visual stimuli picked up by?
Rods and cones
5 major senses (scientific names)
Vision, auditory, gustatory (taste), olfactory (smell) & somatosensory (touch)
In humans, which sense has the most brain area associated with it?
Vision
Magicians are great at affecting our _________ by using __________ techniques.
perception, distraction
Binocular vision
3D vision, eye sight is overlapping b/w eyes
Monocular vision
No 3D vision
Muller-Lyer illusion
The illusion that 2 straight lines are different length by using other lines to manipulate our perception
Absolute threshold
The least amount of energy needed for correct stimulus detection 50% of the time
Just noticeable difference
The smallest difference detectable 50% of the time
Subliminal perception
The belief that we can do certain things and the info gets to our unconscious
Is there any evidence that subliminal perception is consistent and always works?
No
Subliminal stimuli
Stimuli just below the level of conscious awareness
Who still tries to use subliminal perception?
Governments and corporations
Habituation
When the brain stops attending to frequent unchanging stimuli
Why is habituation a great skill for our brain to have?
We are constantly running into sensory stimuli, so rather than being overwhelmed with information this allows the brain to filter out unchanging things (to conserve energy)
Scarecrow example of habituation
A farmer puts out a scarecrow, crows leave – after a short while the crows get used to the unmoving/unchanging scarecrow, crows come back
Sensory adaptation
When sensory receptors become less responsive to constant stimuli
Feeling of clothes example of sensory adaptation
We don’t notice our clothes unless they’re too tight or making us uncomfortable, because those somatosensory receptors are used to us wearing clothes
