USE3 Physiolab Software Guide - J&J Engineering Biofeedback ...

Physiolab Software Guide 36
History or Trend Displays
History Bars
This scrolling bar graph screen, with its combination of live signals and 30
second histograms, is useful for its ability to show trends over time. As each
signal completes one 30 second sweep, a bar is added to the graph showing the
thirty-second average value of the signal. We suggest that you leave the signal
sweep interval at thirty seconds in order to match the bar graph update. The time
interval is the same for each bar graph display so that the Faster/Slower Graph
buttons change all graphs simultaneously. You can select and eliminate the
signal sweep line graphs in order to provide more screen space for the history
bars. You can change the number of bars displayed using the Faster/Slower
Graph buttons and can even condense the bars to view the entire session on a
single screen. This screen resets when you begin recording a session.
History Graphs
Stacked Line graphs containing signal combinations moving at a sweep speed
too slow for feedback, but very useful for seeing a long time interval of the
session and viewing trends over time.
History Charts
An example of the History Chart Display is pictured in the “Scrolling Chart
Displays” section in the discussion of display types above. History Chart
Displays are not meant for feedback, however they are much more useful than
feedback screens for evaluating overall trends. By repeatedly clicking the Slower
Graph button, you can display ever larger time segments, even the entire
session, in a single display window. Autogain is defaulted to ON for this screen.
You can manually adjust individual signal magnification by clicking Autogain OFF
and using the Gain Up/Down buttons. This screen resets when you begin
recording a session.