Chp 4 Flashcards
(31 cards)
Sensation
Stimulation of sensory receptors and the transmission of sensory info to the central nervous system
Perception
Psychological process through which we interpret sensory info
Absolute Threshold
Weakest amount of stimulus that can be sensed
Difference Thershold
Minimum difference that can be detected between two stimuli
Signal-Detection Theory
Method of distinguishing sensory stimuli that takes into account not only strengths but also mood
Sensory adaption
The process by which we become more sensitive to weak stimuli and ignore constants
Pupil
Opening of eye
Lens
Adjusts the distance of objects by changing thickness
Retina
Sensitive part of the eye where images are projected
Photoreceptors
Neurons sensitive to light
Visual acuity
Sharpness of vision
Blind Spot
Area of the retina lacking photoreceptors
Complementary
Colours across from each other on the colour wheel
Afterimage
The color is complementary flash after the first is taken away
Cochlea
Bony tube that contains fluids as well as well as neurons that move in response to vibrations
Auditory Nerve
Movement generates neural impulses transmitted to the brain
Conductive Deafness
Caused by damage to the middle ear
Sensorineural Deafness
Caused by damage to the inner ear
Olfactory Nerve
Sends information about odors to the brain
Gate Theory
Suggests that only a certain amount of information can be processed by the nervous system
Vestibular Senses
Tells you if you are up right
Kinesthesis
Informs people of their body positions and motions
Proximity
Viewing a certain way due to closeness
Closure
Perceive a figure as complete even though it is not
