Fig. 1

Separation of variables between the ‘before’ and ‘during’ phases of the scratch trial. With correlations of greater than 0.7 identified between variables ‘LF power’ and ‘LF:HF ratio’.

Separation of variables between the ‘before’ and ‘during’ phases of the scratch trial. With correlations of greater than 0.7 identified between variables ‘LF power’ and ‘LF:HF ratio’.