Evidence-Based Complementary and Alternative Medicine / 2012 / Article / Tab 3

Research Article

Zingiber officinale Improves Cognitive Function of the Middle-Aged Healthy Women

Table 3

Effect of Zingiber officinale on working memory assessing via computerized battery test.

MeasurementPredose baseline scorePost-dose score
1 month2 months

(1) Delay word recognition (% accuracy)Placebo
400 mg
800 mg ** 

(2) Delay word recognition reaction time (msec.)Placebo
400 mg *
800 mg ** 

(3) Simple reaction time (msec.)Placebo
400 mg
800 mg

(4) Digit vigilance (% accuracy)Placebo
400 mg
800 mg * 

(5) Digit Vigilance reaction time (msec.)Placebo
400 mg
800 mg

(6) Digit vigilance false alar numberPlacebo
400 mg
800 mg **

(7) Choice reaction time (% accuracy)Placebo
400 mg
800 mg ** *** 

(8) Choice reaction time response (msec.)Placebo
400 mg
800 mg * 

(9) Numeric working memory (% accuracy)Placebo
400 mg *
800 mg * ** 

(10) Numeric working memory reaction time (msec.)Placebo
400 mg
800 mg

(11) Picture recognition (% accuracy)Placebo
400 mg
800 mg

(12) Picture recognition reaction time (msec.)Placebo
400 mg
800 mg

(13) Spatial working memory (% accuracy)Placebo
400 mg **
800 mg **

(14) Spatial working memory reaction time (msec.)Placebo
400 mg
800 mg

Subjects were measured for power of attention, continuity of attention, speed of memory, and quality of memory by using computerized battery test. Data are presented as mean ± SD ( /group).
*, **, *** value < 0.05, 0.01, and 0.001 compared to placebo-treated group, respectively.

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