Phototransduction
: Conversion of light energy into neural impulses that the brain can understand.
What is the process called in which stimulus energy is changed into neural impulses our brains can interpret?
In a process called
transduction
, Stacie’s sensory receptors translate the light into signals for the brain.
What is converting stimulus energy into neural impulses?
Transduction
: the conversion of one form of energy into another. In sensation, this is the transformation of sights, sounds, and smells into neural impulses our brain can interpret. Wavelength: the distance from the peak of one light or sound wave to the next peak.
What is the name of the transformation of stimulus energy like light waves into neural impulses?
Transduction
: The transforming of stimulus energies (i.e., light waves, sound waves) into neural impulses. Wavelength: Distance from the peak of one light or sound wave to the next. Wavelength determines HUE or color in vision and Pitch in audition.
What refers to the minimum amount of stimulus energy that a person can detect?
An absolute threshold
is the smallest level of stimulus that can be detected, usually defined as at least half the time. The term is often used in neuroscience and experimental research and can be applied to any stimulus that can be detected by the human senses including sound, touch, taste, sight, and smell.
What information does the brain use to determine the intensity of a stimulus?
What information does the brain use to determine the intensity of a stimulus?
An electrical signal generated in the retina travels along a specific pathway in the nervous system to reach the visual cortex in the brain
.
How does a stimulus become a sensation?
Sensory receptors become activated by stimuli in the environment
by receiving signals
. The transmission of any message in the neurons of our body requires it to be in the form of an action potential; the sensation must undergo conversion into electrical signals.
How does sensation affect our daily life?
Humans possess powerful sensory capacities that allow us to sense the kaleidoscope of sights, sounds, smells, and tastes that surround us. Our eyes detect light energy and our ears pick up sound waves.
Our skin senses touch, pressure, hot, and cold
.
What is neurological sensation?
Sensation, in neurology and psychology,
any concrete, conscious experience resulting from stimulation of a specific sense organ, sensory nerve, or sensory area in the brain
. The word is used in a more general sense to indicate the whole class of such experiences.
What are the 4 basic skin sensations?
The sense of touch is a mix of four distinct skin senses —
pressure, cold, warmth, and pain
. Only pressure has identifiable receptors. All other skin sensations are variations of pressure, warmth, cold and pain.
What is the specific name for the conversion of stimulus energies into electrical energy?
Although the sensory systems associated with these senses are very different, all share a common function: to convert a stimulus (such as light, or sound, or the position of the body) into an electrical signal in the nervous system. This process is called
sensory transduction
.
What form of energy is the stimulus for vision?
Light, in the form
of electromagnetic energy
, is the stimulus for vision.
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 does Weber’s law state?
Weber’s law, also called Weber-Fechner law, historically important psychological law quantifying the perception of change in a given stimulus. The law states that
the change in a stimulus that will be just noticeable is a constant ratio of the original stimulus
.
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 determines the intensity of a stimulus?
Stimulus intensity is encoded in two ways: 1)
frequency coding
, where the firing rate of sensory neurons increases with increased intensity and 2) population coding, where the number of primary afferents responding increases (also called RECRUITMENT). … Acuity is the ability to localize a stimulus.
