Decreased sensitivity to an unchanging stimulus is known as ________.
transduction
.
When a stimulus is unchanging and you become less sensitive to the stimulus?
| A B | Sensory adaptation The process by which we become more sensitive to weak stimuli and less sensitive to unchanging stimuli | Blind spot Where the optic nerve leaves the eye to transmit visual information to the brain and there are no photoreceptors |
|---|
What is the diminished sensitivity to a constant and unchanging stimulation?
Sensory adaptation
is a reduction in sensitivity to a stimulus after constant exposure to it.
What is diminished sensitivity to a stimulus that results from constant stimulation?
Sensory adaptation
. diminished sensitivity as a consequence of constant stimulation.
What refers to the minimum amount of stimulus energy?
Absolute threshold
refers to the minimum amount of stimulus energy that must be present for the stimulus to be detected 50% of the time. Another way to think about this is by asking how dim can a light be or how soft can a sound be and still be detected half of the time.
What are the disadvantages of adapting to a stimulus?
The effects of adaptation can be observed for all senses. For the chemical senses, the effect is that a
constant odor or taste stimulus will be perceived as decreasing in intensity
while sensitivity to that stimulus is also decreased. For sensory evaluation, this poses problems.
What is a mental predisposition to perceive one thing and not another?
Perceptual Set
:
A mental predisposition to perceive one thing and not another.
What is the weakest amount of a stimulus that can be sensed?
–
Absolute threshold
is the weakest amount of a stimulus that can be sensed.
What operates best under bright light conditions?
Light waves cross the cornea and enter the eye at the pupil. …
The fovea
contains cones that possess high levels of visual acuity and operate best in bright light conditions.
What skin receptors are activated while holding hands?
Touch, Thermoception, and Noiception. A number of receptors are distributed throughout the skin to respond to various touch-related stimuli (Figure 1). These receptors include
Meissner’s corpuscles, Pacinian corpuscles, Merkel’s disks, and Ruffini corpuscles
.
What information does the brain use to determine the intensity of a stimulus?
How does the brain determine the intensity of a stimulus? By
looking at the number of receptors activated and the frequency of action potentials from them
. Also looks at the quality of the receptors that are activated. Receptors have different thresholds of activation – this can tell us how large the stimulus was.
Which term refers to how long a stimulus lasts?
Which term refers to how long a stimulus lasts?
Duration
.
Can a wrist watch sense and respond to stimuli?
Yes
, wristwatch wearers are more emotionally stable and can keep their cool better than those who do not wear one. The reason is explained through an experiment to check how both sides respond to different stimuli.
Is it possible to be perceived without being sensed?
Sensation and perception are elements that balance and complement one another. They work together for us to be able to identify and create meaning from stimuli-related information. Without sensation, perception will not be possible,
except for people who believe in extrasensory perception or ESP
.
Is the minimum amount of stimulus energy that must be present for the stimulus to be detected 50% of the time?
The sensitivity of a given sensory system to the relevant stimuli can be expressed as an
absolute threshold
. Absolute threshold refers to the minimum amount of stimulus energy that must be present for the stimulus to be detected 50% of the time.
What is the function of sensation?
Sensation is a function of the
low-level, biochemical and neurological mechanisms that allow the receptor cells of a sensory organ to detect an environmental stimulus
.
