Medoc PATHWAY - Levels

Pathway Technical Reference Manual
Proprietary 78 of 190
Parameter
Description
Baseline (°C)
Temperature from which each new stimulation sequence begins.
ATS: 10°C – 45°C
CHEPS: 30°C – 45°C
Trigger
Trigger mode:
 Automatic – the stimulus will start automatically after the
defined Inter Stimulus Interval (ISI).
 Manual – The operator must initiate the onset of the
stimulus after the defined ISI (using the manual trigger,
keyboard shortcut or TTL-IN)
Rate (°C/sec)
Defines the temperature change rate from the baseline temperature
until the subject responds. Valid range: 0.1 to 4°C/Sec.
Return Rate (°C/sec)
Defines the temperature change rate when stimulus returns to
baseline temperature after the subject has responded. Valid range:
0.1 to 8°C/Sec.
Number of Trials
The number of trials per sequence. Valid range: 1 to 100
Randomize with next
Randomize trials with next sequence
ISI Min (sec)
Minimum Inter-Stimulus-Interval (ISI). Valid range: 0 to 600 (sec)
ISI Max (sec)
Maximum Inter-Stimulus-Interval (ISI). Valid range: 0 to 600 (sec).
Actual ISI will be randomized between min and max values.
Standard events
Different evens which can be indicated during the test via TTL or
Sound See section 7.8
7.7.5 Levels
In this method, the system generates a number of stimuli of changing intensity according to
the subject response. With each stimulus, the subject receives a stimulation of varying
intensity which is determined according to his previous response. Test is terminated after
predefined temperature step size and number of alternations is achieved. For an explanation of
the method, refer to section 2.8.5, page.