Table 1 Classification rates of the brain samples (lateral and anterior prefrontal cortex) according to animal sex (male, female), acute stimulus (yes vs. no), and environmental conditions (positive, negative, control) analysed using near infrared spectroscopy and linear discriminant analysis. Total n = 33. * indicates that the rate of correct classification was different from random.
Factor | PFC region | Factor level | Number of individuals and % correct classification (in brackets) |
|---|---|---|---|
Sex | |||
Lateral * | Female | 14 (78%) | |
Male | 11 (73%) | ||
Anterior | Female | 11 (65%) | |
Male | 9 (60%) | ||
Acute Stimulus | |||
Lateral | Yes | 10 (56%) | |
No | 9 (60%) | ||
Anterior | Yes | 10 (62%) | |
No | 11 (65%) | ||
Environmental condition | |||
Lateral | Positive | 4 (36%) | |
Negative | 2 (29%) | ||
Control | 7 (47%) | ||
Anterior * | Positive | 7 (58%) | |
Negative | 5 (45%) | ||
Control | 6 (60%) |
