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Signal detection theory applies when signal detection is more important than signal fidelity. Safety is an example of an imperative that will influence whether a sensory threshold is low or high. The penalty of a missed detection vs a false detection. Radar is designed with this in mind. Safety is not the main imperative in all biological systems, where fidelity is more important.
C=capacity of channel R=information to be transmitted E=errors
When R>C the problem is signal detection, and E are inevitable (see Constant False Alarm Rate)
When R<C the problem is signal fidelity (eg internet) and E rate increases as R approaches C.
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What is sensory interaction?
Sensory interaction refers to how the senses work together to influence each other. For example, the taste of food is influenced by its smell, and the perception of flavor results from the combination of taste and smell. Sensory interactions play a crucial role in our overall perception and experience of the world around us.
What part of the brain did the hard work of helping you understand the content of this course once the sensory information from your eyes was received?
One popular theory is called the two stream theory. It stipulates that after the visual cortex of the occipital lobe receives the sensory information of the eyes it is redirected in two main streams. The dorsal stream (the "where stream") goes to the parietal cortex and determines where to object we see is located in relation to our own body (a virtual map of our body's position is obtained in the parietal cortex). The ventral, or "what" stream leads the information to the temporal lobe and identifies what we see.
Who said that there is nothing in the mind that does not first come in from the external world through the senses?
This statement is attributed to the philosopher John Locke. Locke's theory of knowledge, known as empiricism, posits that all knowledge comes from sensory experience and that the mind is a blank slate (tabula rasa) at birth.
The theory that different organisms have ancestors that are related is what theory?
The theory that different organisms have ancestors that are related is called the theory of evolution. This theory explains how organisms have changed over time through the process of natural selection, leading to the diversity of life we see today.
Is Darwin theory real?
As real as any scientific theory. Cell theory, the theory of gravity, germ theory of disease, quantum theory and the theory of relativity are all theories that are well supported by the evidence and explain the phenomenon we observe in nature. The theory of evolution by natural selection is no longer " Darwin's theory ", but has been strengthened and added to in the 151 tears since Darwin and Wallace first proposed evolutionary theory.
Which theory emphasizes that personal expectations and motivations influence the level of absolute thresholds?
Signal Detection Theory emphasizes that personal expectations and motivations influence the level of absolute thresholds by suggesting that an individual's sensitivity to a stimulus depends on both sensory factors and decision-making processes. This theory acknowledges that psychological factors such as expectation, motivation, and attentiveness can impact an individual's ability to detect a stimulus.
What theory of perception proposes that detection of stimuli depends on a variety of factors?
Signal Detection Theory proposes that the detection of stimuli depends on both the intensity of the stimulus and the individual's psychological factors, such as motivation and expectancy. This theory suggests that perception is influenced by both the sensitivity of sensory processes and cognitive factors.
What does signal-detection theory take into account?
Signal detection theory, is a means to quantify the ability to discern between signal and noise. There are a number of determiners of how a detecting system will detect a signal, and where its threshold levels will be. When the detecting system is a human being, experience, expectations, physiological state (e.g. fatigue) and other factors can affect the threshold applied
What has the author Iickho Song written?
Iickho Song has written: 'Advanced theory of signal detection' -- subject(s): Signal detection
What is a signal detection threshold?
Detection theory allows one to quantify the ability to discern between information bearing patterns and random patterns that causes confusion in the patterns. In electronics, detection theory is often called signal recovery.
What has the author Ralph Dieter Hippenstiel written?
Ralph Dieter Hippenstiel has written: 'Detection theory' -- subject(s): Mathematics, Signal processing, Electronic surveillance, Digital techniques, Signal theory (Telecommunication), Detectors, Signal detection
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 has the author James P Egan written?
James P. Egan has written: 'Signal detection theory and ROC-analysis' -- subject(s): Decision making, Psychometrics, Psychophysics, Sensation, Signal detection (Psychology)
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?
The Signal Detection Theory could suggest that watching a horror movie late at night could lower your absolute threshold for sound. Exposure to intense stimuli like a horror movie might lead to heightened arousal and sensitivity to sensory input, such as sound, which could affect your perception and response to stimuli like trying to fall asleep in a quiet environment.
What has the author Harry L Van Trees written?
Harry L Van Trees has written: 'Detection, estimation, and modulation theory' -- subject(s): Signal theory (Telecommunication), Modulation theory, Electric interference, Signal processing, Estimation theory, OverDrive, Nonfiction, Science
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 has the author Shusheng Xu written?
Shusheng Xu has written: 'Xin hao jian ce yu gu ji' -- subject(s): Signal detection, Estimation theory
