Dataset: psychophysiology_rm.csv

Sources: 
E. Bagiella, R.P. Sloan, and D.F. Heitjan (2000). "Mixed-Effects 
Models in Psychophysiology," Psychophysiology, Vol. 37, pp. 13-20.

M.W. Vasey and J.F. Thayer (1987). "The Continuing Problem of False
Positives in Repeated Measures ANOVA in Psychophysiology: A
Multivariate Solution," Psychophysiology, Vol. 24, pp. 479-486.

Description: Results of a Repeated Measures experiment, where 22 subjects
were measured (Left Brow Electromyogram (EMG)) under 4 conditions:
Relaxing, Positive Affect, Agitation, Sadness. Data were analyzed so
that the "time order" of the treatments would be: Positive Affect,
Agitation, Sadness, Relaxation. Fit MANOVA and Linear Mixed Models
with the following Covariance structures using SAS Proc Mixed:
Compound Symmetry, Huynh-Feldt, Unstructured, Heterogeneous Compound
Symmetry, Heterogeneous Toeplitz, and Random Intercepts.

Variables Names:
patnum    /* patient id  */
time_lb   /* Left Brow EMG Condition: 10=Relax, 2=Pos Aff, 3=Agit, 4=Sad */
lbrow    /* Left Brow EMG amplitudes (muV)