PROMETHEUS MR-20, Operator'S Manual

Page: 23 / 39

MR-20™ USB Operator’s Guide
Page 23 of 39
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When ABOVE or BELOW goal choices are made, an arrow will appear. The arrow serves a dual
function. The position of the arrow in the display represents an absolute microvolt goal. The direction
of the arrow shows the goal direction. If an
ABOVE goal choice is made an arrow pointing up will
appear, prompting a contraction goal. If a BELOW goal choice is made an arrow pointing down will
appear, prompting an inhibition goal.
When a goal arrow is present, the moving bar display fills the space between the goal arrow and the
current activity level. Thus the length of the bar shows either the change in level needed to reach the
goal or the amount the goal is being exceeded.
If a
TONE goal is selected for a single channel and the EMG activity meets or exceeds the goal, a
pulsed tone will be heard. If TONE goals are selected for BOTH channels and the EMG activity meets
or exceeds the goals for BOTH channels simultaneously , then a pulsed tone will be heard. By
presenting audio feedback only when BOTH goal parameters are met, there is no confusion on the
patient's or therapist's part as to what constitutes success.
Similarly, if a
STIM goal is selected for a single channel and the EMG activity meets or exceeds the
goal (for the SUCCESS TIME ), the stimulator will be activated. If STIM goals are selected for BOTH
channels and the EMG activity meets or exceeds the goals for BOTH channels simultaneously
(for the SUCCESS TIME ), then the stimulator will be activated.
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When a
Tone or Stim goal is initially selected, the default goal value is 10 µV (microvolts). To change
the goal value, the up and down arrow keys for each channel are used. If any of the 4 arrow keys are
pressed, the digital displays show the current goal setting rather than the current level of EMG. Note
that the bar itself still shows the current level of EMG activity, so that goals can be changed without
interrupting the training session.
To change the goal value, simply press the appropriate arrow key until the desired goal is reached.
Use single key presses to increment or decrement the goal value, or hold the key down for larger
changes. Both the digital display and the position of the goal arrow will change to reflect the current
value. When the desired goal value is displayed, do not press any keys. The MR-20 will return to the
real-time display in a few seconds.