Pathway Technical Reference Manual
Proprietary 37 of 190
Figure 7: VAS Search – Manual Mode
In this window the user selects if to increase or decrease the destination temperature of the
next trial and by how much (determined by the 'Step Size' value). There is also an option to
resume the program if the operator decides that the target pain rating was reached.
In Automatic mode the target pain rating and the step size are predetermined during program
creation and the temperature of each trial is defined according to these parameters and the
subject reported pain rating - increases by the step size value if the reported pain rating is
lower than the target and decreases by the step size value if the reported pain rating is higher
than the target.
See section 7.7.7, page 82 for full description of program details and parameters.
2.8.8 Chain Method
Using this method, you can create a program that includes any other methods, any number of
times, in any order.
See section 7.7.8, page 84 for full description of program details and parameters.
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