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Figure 4 Individual correlation coefficients between onset time and peak time, plotted versus the individual asynchrony in Tonset. The asynchrony in Tonset is defined as the intra-subject variance in Tonset and is a measure for the range of values that is available for the correlation. Each data point represents one subject. (Top row) Correlation coefficients from nonischemic patients (n = 18), using (A) Tpeak,first and (B) Tpeak,max. For some nonischemic patients, no association between Tpeak,max and Tonset exists, even when there is a large asynchrony in Tonset, indicating an important discrepancy between Tpeak,max and Tonset, which is not observed between Tpeak,first and Tonset. (Bottom row) Correlation coefficients from ischemic patients (n = 11) for (C) Tpeak,first and (D) Tpeak,max. A considerable number of ischemic patients show a poor correlation between peak time and onset time, regardless of whether Tpeak,first or Tpeak,max is used. Abbreviations as in Figure 2.
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