| Effect | Increase |
| Trial Design | Double blind |
| Trial Length | 24 hours |
| Number of Subjects | 20 |
| Sex | Both Genders |
| Age Range | 18-29 |
Although this study was testing the effects of a combination of ginkgo and panax, one of the reference groups (EGb-761 in isolation at 120-360mg) resulted in a increase in the number of subtractions on a serial threes test with no influence on serial sevens; the number of errors was reduced in serial sevens, and mostly unaffected during serial threes except for a slight increase in errors with 120mg only.
