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What does signal detection theory add to the ideas of sensory thresholds?
Wiki User
∙ 13y ago
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.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoin a nutshell signal detection theory represents decisions better than threshold theories.
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