Synchronize your equipment to the T.O.V.A.!
The TOVA Company is pleased to announce the T.O.V.A. Synchronization Interface v3, a new add-on to the T.O.V.A. 8 and 9 systems. 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.
The sync interface sends the following four events from the T.O.V.A. test to your equipment:
- Is the test being administered?
- Is the stimuli being displayed?
- Is the stimuli a target or nontarget?
- Is the subject pressing the microswitch?
Signals are output on industry-standard BNC connectors. User's can choose one of two output options: These events can be output in two different ways:
- "Active output mode", where a 5V signal is placed on the connector when a signal is asserted.
- "Passive output mode", where the connectors are left floating when a signal is asserted. In this case, an external voltage can be applied to the V-EXT input connector to apply a customized voltage of up to 5V to be used by the sync interface.