From: Distinguishing bias from sensitivity effects in multialternative detection tasks
Journal of Vision. 2014;14(9):16. doi:10.1167/14.9.16
Figure Legend:
Relationship to previous models. (A) Schematic of a 2-ADC model. There are three potential stimulus events—stimulus
at location 1, at location 2, or no stimulus (catch)—with their associated decision variable distributions (red, blue, and
black contours, respectively). The decision rule partitions decision space into three response regions, including a NoGo
response. Thick lines: decision boundaries. Left and right panels: Decision variable distributions and optimal decision
surfaces for equal (left) or unequal (right) sensitivities for the different stimulus events. (B) Schematic of a 2-AFC model.
The decision rule partitions decision space into two response regions. Lower inset: The model is readily reducible to an
equivalent,
one-dimensional
formulation
by a linear transformation
of decision
variables (difference,
= Ψ1 –AllΨrights
2). Other
Date
of download:
7/28/2017
The Association
for Research in Vision
and Ophthalmology
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reserved.
conventions are as in (A). (C) Schematic of an indecision model. The decision rule partitions decision space into three