A decision-making threshold is the value of the decision-making variable at which the decision is made, such that an action is selected or a commitment to one alternative is made, marking the end of accumulation of information.
A decision-making threshold determines when a decision-making process is completed. It represents a value of the decision variable, which in practice could be a linear combination of a set of neural firing rates, at which the accumulation of sensory evidence terminates and a response or action is chosen. In two-alternative forced-choice tasks, two thresholds exist, one for each of the two alternatives.
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