Data Quality Measures advanced

Here we show more information about the Data Quality measures in ERPLAB.

The ERP.dataquality structure

By default, the ERP Averager produced an ERP dataset with 3 dataquality measures. They are saved in the Matlab structure ERP.dataquality - ERP.dataquality(1), ERP.dataquality(2), and ERP.dataquality(3).

They have the fields of

• type (string)
• times (tw x 2 array, start times, end times, where tw is the number of time windows)
• data (electrodes x tw x bin)
• time_window_labels (optional cell array of strings, length of tw), and
• comments (optional string).

Code access examples

To access the name of the 3rd data quality measure in the current ERP, enter:

ERP.dataquality(3).type

ans = aSME

To access the aSME data quality at the 1st electrode, 2nd time-window, and the 3rd bin:

ERP.dataquality(3).data(1,2,3)

For more dataquality scripting examples, see the SME Matlab demos on the Open Science Foundation.