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What is a brief auditory or visual signal that occurs below the absolute threshold for that sense?
Wiki User
∙ 11y ago
Subliminal messages
Wiki User
∙ 11y ago
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When you notice the soft sound of rain on the roof it has crossed a perceptual line called your threshold for detecting an auditory signal.?
If you are distracted, you may not even notice the rain. But it is loud enough that you will be able to recognize it as rain and will notice when it stops.
Which theory would suggest that watching a horror movie late at night could lower your absolute threshold for sound as you subsequently tried to fall asleep?
signal detection theory
What type of signal is brief and can work at night or among obstructions a. tactile b. electrical c. olfactory d. visual e. auditory?
auditory
What is the difference between dB SPL and dB SL?
There are several types of dB. dB SPL are decibels measuring sound pressure levels. There is an accepted reference point of 0 dB SPL which equals 20 micropascals = 2 × 10-5 pascals. dB SL are decibels measuring a signal relative to an individuals auditory threshold. For example, if a person's minimum threshold is 30 dB HL (yet another type of decibel measuring how much worse a person's hearing is based on a referential dB level) and a signal is at 40 dB HL, the sensation level of this signal to this individual is 10 db SL (40 dB - 30 dB = 10 dB SL).
How does the cochlea of the inner ear help you hear?
The cochlea has hairs cells that ride on the basilar membrane. These hair cells convert the mechanical vibration of sound waves into an electrical signal and excite the auditory nerve's 30 000 fibers. The auditory nerve transports the signal to the brainstem. Since each hair cell is on a different part of the basilar membrane, each hair cell is best excited by a different frequency. Thus, each nerve fiber carries auditory information about a different frequency to the brain.
When you notice the soft sound of rain on the roof it has crossed a perceptual line called your threshold for detecting an auditory signal. A. relative B. defining C. determinant D. absolute?
Defining line.
When you notice the soft sound of rain on the roof it has crossed a perceptual line called your threshold for detecting an auditory signal A absolute B relative C determinant D defining?
Defining line.
What type of signal is long-lasting and works at night?
olfactory!! not auditory
What is the signal detection theory?
a theory predicting how and when we detect the presence of a faint stimulus ("signal") amid background stimulation ("noise"). Assumes there is no signal absolute threshold and detection depends partly on a person's experience, expectations, motivation, and level of fatigue.
What is the absolute threshold?
An absolute threshold was seen as a hypothetical barrier that incoming stimuli must overcome before they can be perceived, it was based on the ability to pass through the threshold based on absolute judgements about a single stimulus. In the case where a person were to, for example- detect a light, the strength of said light would have to be strong enough to pass the threshold for an observer to perceive it, it was generally based on the observer's ability to detect a signal.In reality however, there is no such threshold that splits the stimulus dimension into detectable and undetectable components. Rather, a stimulus must yield a sensation that exceeds the decision criterion (beta) for even the weakest signal to be perceived, so a decision threshold is the stimulus that elicits the response or perception. The detectability and reporting of the presence of a signal- or the light- are both factors because the decision threshold must be passed and the results from the strength of the stimulus, for example the light- as well the evidence of yielding such strength, must be plausible. Only in this case, do we have correct detection of a signal.
What is the difference between an absolute threshold and a decision threshold?
An absolute threshold was seen as a hypothetical barrier that incoming stimuli must overcome before they can be perceived, it was based on the ability to pass through the threshold based on absolute judgements about a single stimulus. In the case where a person were to, for example- detect a light, the strength of said light would have to be strong enough to pass the threshold for an observer to perceive it, it was generally based on the observer's ability to detect a signal.In reality however, there is no such threshold that splits the stimulus dimension into detectable and undetectable components. Rather, a stimulus must yield a sensation that exceeds the decision criterion (beta) for even the weakest signal to be perceived, so a decision threshold is the stimulus that elicits the response or perception. The detectability and reporting of the presence of a signal- or the light- are both factors because the decision threshold must be passed and the results from the strength of the stimulus, for example the light- as well the evidence of yielding such strength, must be plausible. Only in this case, do we have correct detection of a signal.
Where is the auditory cortex?
The primary auditory cortex, i.e. where the auditory signal first reach the cortex, is located on the Heshl's gyrus, on the supratemporal plane (the upper part of the temporal lobe). The auditory information then spreads to secondary auditory cortices located around primary the primary auditory cortex. Then the auditory signal diffuses to associative areas located in the parietal and frontal lobes.
When you notice the soft sound of rain on the roof it has crossed a perceptual line called your threshold for detecting an auditory signal?
If you are distracted, you may not even notice the rain. But it is loud enough that you will be able to recognize it as rain and will notice when it stops.
When you notice the soft sound of rain on the roof it has crossed a perceptual line called your threshold for detecting an auditory signal.?
If you are distracted, you may not even notice the rain. But it is loud enough that you will be able to recognize it as rain and will notice when it stops.
Which theory would suggest that watching a horror movie late at night could lower your absolute threshold for sound as you subsequently tried to fall asleep?
signal detection theory
Theory would suggest that watching a horror movie late at night could lower your absolute threshold for sound as you sebsequently tried to fall asleep?
signal detection theory
What is a music expander?
An expander works in a similar way to a compressor, with a compressor you set the threshold and when the signal goes over this threshold the compressor starts to work. The signal over the threshold is attenuated (reduced) at the rate of the other parameter settings (ie. attack, ratio, release,etc.). An expander works in an opposite fashion, the threshold is set and any part of the signal dropping below this threshold will be affected by the expander and this level will be raised. The expander therefore like the compressor balances out the signal making it sound more professional.
