Skip to main content
. 2015 Apr 8;11(4):e1004066. doi: 10.1371/journal.pcbi.1004066

Table 1. Population centers and 5-way emotion-classification performance.

Anger Disgust Fear Happy Sad
Number of population centers
Mean 51.53 35.68 40.4 31.47 34.51
SD 2.64 2.44 1.99 2.26 2.16
Median 52 36 40 31 35
UCL 46 31 36 27 30
LCL 57 41 44 36 39
Model Performance
Sensitivity .43 .76 .86 .59 .65
Specificity .99 .94 .80 .91 .94
PPV .89 .74 .63 .62 .67
NPV .89 .95 .94 .90 .93

Note: Number of population centers refers to the estimated number of discrete brain regions activated for each emotion category. SD denotes standard deviation, and UCL and LCL denote upper and lower 95% posterior credible intervals, respectively. Model performance includes the hits rate (sensitivity), correct rejection rate (specificity), positive and negative predictive values (PPV and NPV) for a test classifying each study as belonging to an emotion category or not based on its reported brain foci. Performance statistics are based on leave-one-study-out cross-validated results.