GSR data recorded in Pro Lab can be replayed synchronized with the video of the recording and eye movement data. Pro Lab will show the GSR data as a chart with the GSR signal plotted over time. You can easily navigate to specific parts of the recording and replay the entire recording or parts of it to visualize the GSR signal.
Reviewing the GSR signal after the recording is a good practice that allows you to inspect the GSR data quality and ensure that no relevant parts of the recording contain large artifacts, such as those caused by sudden electrode movement or electrode pressure. Replaying the GSR data in Pro Lab will enable you to inspect the GSR data and detect any large artifact.
You can choose to visualize either the raw GSR data as acquired from the sensor or the GSR data after applying the Tobii GSR filter. The filtered GSR data will display the GSR signal after removing the most common types of GSR artifacts: high-frequency noise and rapid-transient artifacts. However, inspecting also the raw signal is always a good practice that will allow you to detect large artifacts that otherwise may be masked once the GSR filter is applied.
The GSR data chart also shows the results of the GSR data analysis applied by Pro Lab. Pro Lab GSR analysis will detect the rapid changes in the GSR signal (skin conductance responses (SCRs)) that measure emotional arousal responses. Pro Lab GSR analysis will also classify SCRs that are caused in response to specific events, such as the onset of a stimulus (event-related skin conductance responses (ER-SCRs)). All detected SCRs and ER-SCRs due to stimulus onsets will be displayed in the GSR data chart with a marker on top of each.