| Effect | Decrease |
| Trial Design | Cohort |
| Trial Length | 1-6 months |
| Number of Subjects | 15 |
| Sex | Both Genders |
| Age Range | 65+ |
In 18 elderly persons given 300mg PS sourced from bovine cortex for 12 weeks, there was a significant improvement in tested parameters of immediate learning and memory acquisition; there were strong effects on facial recognition.
