Chapter 3 Flashcards
What is sensation?
Activation of the sense organsbya source of physical energy
What is perception?
Interpretation of stimuli
Stimulus
Energy that produces A response Ina sense organ
Psychophysics
The study the relationship between:
Physical aspects of stimuli and our psychological experience of them
Absolute thresholds
Difference threshold
Weber’s law
Adaptation
Vision
Your eyes convert light to a form used by neurons
Cornea
A transparent, protective window at the front of the eye
The iris
Colored part of the eye
The pupil
Is the dark hole in the Center of the eye opening depends on amount of light
Lens
Focuses light by changing shape
Retina
Converts electromagnetic energy of light to electrical impulses for transmission to the brain
Rods
Thin, cylinder likereceptor cells that are highly sensitive to light
Cones
Cone shared receptor cells responsible for sharp focus and color perception
Peripheral vision
Seeing objects that are outside the main center of focus
Sound
Movement of air molecules brought about by a source of vibration
Eardrum
Part of ear that vibrates when sound waves hit it:
Ear drum middle ear 3 bones
Hammer, anvil, stirrups
Inner ear
Changes the sound vibrations into a form transmittable the brain
Cochlea
Coiled tube in the ear filled with fluid that vibrates in response to sound
Basilar membrane
Inside the cochlea contains sense receptors for sound
Hair cells
Tiny cells covering the basilar entering the membrane that, when bent by vibrations entering the cochlea, transmit neural messages to the brain
Place theory of hearing
Different areas of the basilar membrane respond to different frequencies
Frequency theory of hearing
Entire basilar membrane alas like a microphone, vibrating as a whole in response to a sound
