Session 6 Flashcards
Sensation
Awareness resulting from the stimulation of a sense organ
Perception
Organizing and interpretation of sensation
Senses
Seeing
Hearing
Taste
Smell
Touch
Proprioception
Transduction
The conversion of stimuli detected by receptor cells to electrical impulses that are then transported to the brain
Magnetoreception
Birds can also sense the pull of earths magnetic field
And able to see UV light
Psychophysics
Studies effect of physical stimuli on sensory perceptions and mental states
Who founded psychophysics
Gustav Fechner
Studied relationship between strength of stimulus and persons ability to detect stimulus
Absolute threshold
Intensity of a stimulus that allows an organism to barely detect it
Webers law
Change in Stimulus is easier to detect when it’s a bigger proportion to current stimulus vs size of change
Quiet music at 1 volume to 2 seems louder that turning 10-11
Seeing
Light go into eye
Initiating transduction
Once info reaches the visual cortex
Processed by colours
Image formed in retina is
Inverted brain processes it as being right side up
Rods and cones in eyes
Retina has layers of neurons specialized to respond to light
Light falls in retina, activates receptor cells known as rods and cones
Rods eyes
120 million per eye
Help us see in dim light
Black and white
Primarily around edges of retina
Peripheral vision
Cones eyes
Colours and fine details
Bad in dim light
5 million per eye
Center of eye
Blind spot in eye
No photoreceptor cells where the optic nerve leaves the retina a hole in our vision is created
