RUN SESSION - SIMPLE APPICATION SELECTION
NOTE: What you may find on the Applications menu...
Basic Applications : J&J provides a set of basic applications covering standardized biofeedback and one-channel neurofeedback.
APPLICATIONS are Specific Programs containing
feedback protocols and feedback displays.
Default notch filter is North American 60 Hz AC. If you are in a 50 Hz country, click on 50 Hz. The program will save the new notch filter.
All applications are organized into the Run Session Screen.
This allows you to switch from application to application, or go immediately from collecting data from a session to making a Report.
See Hardware Type in the window shown above?
Did you set the Hardware Type to your hardware?
Your system will report correctly a 'Device Not Found' error until you set it propely.
More on Running Applications - overview of basic screen sequence for setting up sessions
To begin running an application double-click on the Physiolab icon from your desktop. The program will load to the Main Menu .
Click on Select Application and choose application from the list.
Click on Run New Session.
Next you will see the Sensor Test Screen. Hook up the sensors using the picture as a guide. The bars display the impedance of each sensor. A red bar indicates a potential problem on that input. There is either no lead hooked into the input, the impedance is too high or a lead is broken. If the lead is connected into the input and not broken, the contact may not be good. Re-prep the skin to establish a better contact. A yellow bar indicates marginal values that may or may not work properly. Prep the skin again to assure a good contact. A green bar indicates that the impedance or the signal range is good.
Other sensor inputs will show a green bar when working properly and the bar will move with sensor input changes.
Click on Check Signals button. This screen is used to verify all of the signals. It is not intended for feedback. All signals have auto-gain turned on so that scale adjustment is not necessary.
The top screen toolbar provides buttons to select a screen. Once you have determined the quality of the signals, click on one of the screen choices. The screen button which is highlighted shows the name of the current screen being displayed. Most of the top buttons have pull-down menus of alternate screen choices. Clicking on the side bar buttons activates this pull-down menu. When a screen is selected from this menu, it is assigned to this button.
The left edge toolbar provides buttons to change the display characteristics and will affect only one display (window) or signal at a time.
The bottom screen toolbar provides control for recording and various screen features such as screen freeze and sweep reset.
Refer to other parts of this help index for more details about each specific icon.
SIDEBAR Eliminating Electrical Line Frequency Noise
USING THE NOTCH FILTER
In North America the electrical line frequency is 60Hz, but in many countries line frequency is 50 Hz. The notch filter is defaulted to 60Hz so, if you live in a country where the electrical line frequency is 50 Hz, you will need to configure the software for your area. In the Hardware Setup window (pictured above) check to see that the line frequency for your area is selected in the Notch filter box. If the setting is incorrect you will see noise appearing as spikes at regular frequencies in the signal FFT displays. (For additional information please see the “Artifact Detection” section in your Hardware Manual.)
* NOTE: J&J has engineered the notch filters to filter out harmonics of the line frequencies as well: For 60 HZ, filters are in place for 60, 120, 180, 240 and 300 Hz as well. The same applies to the 50 Hz filter. This means you get really clean signals.
* Even so, place your hardware at least 3 feet away from electronic devices, especially monitors and computers. At the same time keep the sensor cables away from AC lines or any sources of RF signals, like microway radio station relays or centrifuges.
New users:J&J has lots of experimental applications. Here as some...

