The T.O.V.A. Synchronization Interface

Synchronize your equipment to the T.O.V.A.!

The TOVA Company is pleased to announce the T.O.V.A. Synchronization Interface, a new add-on to the T.O.V.A. 8 system. The sync interface allows you to accurately synchronize events in the T.O.V.A. with other equipment, such as EEG, EKG, or HEM systems. The sync interface is an output-only device, meaning that signals from the T.O.V.A. (when the stimulus is on the screen, if it's a target or non-target, if the microswitch is being pressed, etc) are transmitted in real time to be recorded by your equipment.

A good example of the use of the T.O.V.A. sync interface is connecting the T.O.V.A. 8 with an EEG system. In this case, the output lines from the sync interface are fed into the auxiliary or digital inputs of the EEG equipment and recorded along with the EEG signals. Later, researcher can correlate the state of the T.O.V.A. test with EEG signals, looking for signals such as the P300 response to novel stimuli.

T.O.V.A. events

The sync interface sends the following four events from the T.O.V.A. test to your equipment:

  1. Is the test being administered?
  2. Is the stimuli being displayed?
  3. Is the stimuli a target or nontarget?
  4. Is the subject pressing the microswitch?

Output types

These events can be output in two different ways:

  1. Four separate digital logic signals ("bits") with an adjustable high level (32 mV to 5.0V in steps of 4 mV).
  2. An analog signal which combines all four events into a single analog level, between 0V and a user-selectable high voltage between 32 mV and 5.0V in steps of 4 mV.

Connector types

Finally, you have four different connector options with the T.O.V.A. Synchronization Interface:

  1. A male 2 x 5 0.1 inch pin header
  2. A 0.1 inch euroterminal block
  3. An optically-isolated 0.1 inch euro-terminal block
  4. A ribbon cable with two female 2 x 5 0.1 inch connectors that can be spliced into individual wires

For more information, please see the T.O.V.A. Synchronization Interface User's Manual.

To purchase, please visit the T.O.V.A. Store.