Medoc TSA 2001, Техническое справочное руководство

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Q-Sense Technical Reference Manual
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thermal sensation is calculated as the difference between means of cold-sensation and warm-
sensation. Using the TSL method, allows the Limen or ‘no thermal sensation’ area to be
calculated.
For detailed information refer to section 7.6.3 , page 70 .
2.7.4 Ramp & Hold Method
In this method, the temperature rises (or falls) to a predetermined destination, at a
predetermined rate, remains there for a predetermined duration and proceeds to the next
destination.
There are two main options: Return to Baseline, and Continue to Next Destination.
“Return to Baseline” option
The diagram below shows a general view of the sequence and predefined parameters. For the
definition of each parameter, see
7.6.4 , page 73 .
T
e
m
p
e
ra
tu
re
Time
Baseline
Temperature
Destination
temperature
Onset
Destination
Temperature
End of
Duration
Duration
Time
Time
Before
Sequence
Onset-to-Onset Time
Trial 1
Trial 2
End-to-Onset
Time
Sequence 1
Start Test
End Test
Figure 2: Ramp &Hold Sequence – Return to Baseline
Each sequence consists of a number of similar trials (one trial is also allowed).
1. The start point of each trial is called onset.
The temperature at this point (the onset point) is the Baseline Temperature defined for this
sequence.
2. From this point the temperature changes at a predefined rate, until it reaches the
predefined Destination Temperature.
3. Then, the temperature remains at the destination temperature level for the predefined
duration time. The point at the end of the duration time is called end of duration.
Setting duration time to zero produces peaks.
4. Finally, the temperature returns at the return rate, to the baseline temperature. The
temperature remains at this level for a duration that can be specified in one of two ways:
as an end-to-onset time or an onset-to-onset time.
At the start of each sequence the temperature should remain at the Baseline Temperature
level for the time given by the parameter Time Before Sequence.