Q5: Vision, Hearing, and Sensory Basics Flashcards
5 senses
vision, hearing, taste, smell, skin senses
sensory receptors
convert sources of sensory stimuli, such as light and sound, into neural impulses
sensory transduction
convert of environmental energy into a neural response
absolute sensory threshold
smallest amount of a stimulus that can be reliably detected
difference sensory threshold
smallest difference between the stimuli that can be reliably detected
perception
interpretation of sensation
weber’s law
the amount you must change a stimulus to detect a difference is given a constant fraction of the original stimulus (ex: saltiness of food: 1/5, pressure of skin: 1/7, etc.)
signal detection theory
predicts when we will detect weak signals
sensory adaptation
process by which sensory receptors adapt to constant stimuli by becoming less sensitive (ex: it is cold getting into a pool, but you get used to it)
habituation
learning to ignore sensation (ex: if you live by train tracks the sound is still present but you don’t notice it anymore)
vision
predominant sense, occipital lobe
light
wave of electromagnetic energy: amplitude and wavelength
amplitude (vision)
up and down, brightness/intensity
wavelength (vision)
sideways, hue/color
cornea
first structure light can pass through (clear)