Sensing/Perceiving
The lowest intensity levels of a stimulus a person can detect half of the time is known as ____.
absolute threshold
The structure composed of the axons of ganglion cells from the retina that carry visual information from the eye to the brain is known as the
optic nerve
The _____ of the sound wave refers to the complexity of the wave.
purity
In the context of controlling pain, ____ are a class of drugs prescribed for sever pain by physicians.
analgesics
The olfactory sensory neurons contain hairlike projections called.
cilia
______ is the study of how people psychologically perceive physical stimuli such as light, sound waves, and touch.
Psychophysics
The ______ refers to the opening in the iris through which light enters the eye.
pupil
Once inside the auditory canal, sound vibrations travel to the _____.
tympanic membrane
In the context of pain perception, the brain regions active in both physical and emotional pain are the anterior cingulate cortex (ACC) and the _______.
insula
The textured structures on the tongue called ____, contain about 10,000 taste buds.
papillae
Our sensitivity diminishes when an object constantly stimulates our senses. This process is known as _______.
sensory adaptation
The trichromatic theory of color vision states that all colors humans experience result from a mixture of _____.
red, blue, and green
This part of the human ear is a bony tube, curled like a snail's shell, and filled with fluid.
cochlea
Physicians generally refrain from prescribing _____ as an opioid for pain relief.
heroin
The ______ send information either directly to the smell-processing areas in the cortex or indirectly to the cortex by way of the thalamus.
olfactory bulb
______ ensures that we notice changes in stimulation more than stimulation itself.
Sensory adaptation
The ____ is a thin layer of nerve tissue that lines the back of the eye.
retina
The _____ runs through the cochlea.
basilar membrane
______ is a complex emotional and sensory experience associated with actual or potential tissue damage.
Pain
The cells on the tongue buds that process information are called ______.
taste receptor cells
In signal detection, one of the possible outcomes is a _____ which is correctly detecting a stimulus that is present.
hit.
The Gestalt law of _____ says that we tend to group together objects that are near one another.
proximity
The _____ is the inner ear sensory receptor for sound that transduces sound vibrations into neural impulses.
hair cell
The human body has natural painkillers called ______.
Endorphins
When chemicals come in contact with the cilia _____ occurs, and the olfactory message travels to the olfactory bulb in the _____.
transduction; forebrain