Positive modulation of cognition and mood in the healthy elderly volunteer following the administration of Centella asiatica
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In the modified gambling task, subjects selected cards from one of two decks to earn cash. The cards were pre-organized so that one deck (A) had an overall loss of $2.50 every ten cards and the other deck (B) had an overall gain of $2.50 every ten cards. All the cards in deck A gave a $1.00 on every turn but were occasionally accompanied with losses, $7.50 for example (for a net loss of $6.50). The other deck B gave a smaller gain for each card, +$0.50 but had smaller occasional losses. Subjects did not know the composition...
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