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. Author manuscript; available in PMC: 2013 Oct 17.
Published in final edited form as: Cell. 2001 Apr 6;105(1):25–42. doi: 10.1016/s0092-8674(01)00294-x

Table 2.

Correlational Analysis of a Period-Amplitude Factor with SCN Divisional Averages

Period
Factor		 Amplitude
Factor		 Period-Amplitude
Factor
Dorsal SCN −0.456 0.508 −0.645
Ventral SCN −0.464 0.542 −0.669
Left SCN −0.466 0.509 −0.649
Right SCN −0.432 0.515 −0.633
Anterior SCN −0.506 0.524 −0.660
Medial SCN −0.448 0.515 −0.640
Posterior SCN −0.406 0.512 −0.644
F-statistic 4.960 5.929 12.591
Probability 0.000 0.000 0.000

Period and amplitude principal components factors are derived from two measures each (TAUDD2, TAUDD4 and FFTDD1, FFTDD4). The period-amplitude factor is derived from all four of these variables. F-statistics refer to significance tests for prediction of factor variables.