AlgoMed Technical Reference Manual
Proprietary 20 of 110
Ramp & Hold: The Pressure applied by the operator is given according to preset
parameters such as: pressure increase rate, destination, duration at destination
pressure and etc.
2.3.1 Limits Method
This reaction time inclusive method consists of stimuli of continuously changing intensity. With
each stimulus, when the subject perceives a predefined sensation, he/she notify the operator
who stops the stimulus.
The Limits method is the most widely used method for threshold and tolerance determination,
because it requires the shortest test procedure of all methods.
See section 7.3.1.1, page 50, for full description of program details and parameters.
2.3.1.1 Pain Threshold
Pain Threshold can be defined as the minimum pressure that induces pain in tender and
trigger points of tissue. The AlgoMed quantitatively assesses the tenderness of hypersensitive
areas. The AlgoMed, used for pain threshold testing, is appropriate for determining the
minimum pressure that triggers pain at the point of interest.
2.3.1.2 Pain Tolerance
Pain Tolerance can be defined as the point where painful pressure stimulus cannot be
tolerated. The AlgoMed assesses pain sensitivity for maximum tolerated pressure. AlgoMed is
used for pain tolerance testing; its wider range necessary for comparative tests between a
normal sensitivity control point and the area of interest.
2.3.2 Ramp and Hold Method
The ramp and hold method is a configurable method enabling the user to design a wide range
of pressure stimuli patterns which can be utilized for various applications such as temporal
summation and DNIC.
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