Taking L-Theanine has been shown to improve alpha-wave activity in the human
brain. Alpha-wave activity is elevated when a person is awake but relaxed
(theta-waves are elevated when a person is awake but drowsy, and beta-waves are
elevated when you are active but anxious).
Previously it has been shown that alpha-wave activity when elevated demonstrates
selective attention. In this study test subjects were given tasks which involved
a number of senses to understand and perform and activity in regions of their
brain was observed by scientists from the Department of Psychology, the City
College of CUNY, through the use of 168 scalp electrodes to gather
electrophysiological activity. L-Theanine improved the ability to concentrate on
the task at hand and tended to allow the participant to filter out extraneous
events that would distract the person; in other words it improved the ability to
stay focused. The ability to pay attention to sound was impacted more than
vision. L-Theanine may have a specific effect on the ability to pay attention.
The study is published in the Jan-Feb 2007 issue of the journal Clinical
L-Theanine protects the brain, improves neurotransmitter levels, and enhances
memory and cognition
Scientists from the Monash Center for Brain and Behavior, Monash University in
Australia have recently published a description of the effects of L-Theanine on
the brain based on carefully collated research. Neurochemistry studies suggest
that L-Theanine increases serotonin and dopamine levels in the brain, as well as
GABA levels. It has also demonstrated a neuroprotective effect especially
protecting brain cells from excito-toxicity caused by the by the neuro-stimulant
glutamate. Behavioral studies in the lab show that it may improve learning and
memory. Overall, L-Theanine has pharmacologic activity that is both
neuroprotective (brain cell protective) and cognitive enhancing. The study is
published in a recent issue of the Journal of Herbal Pharmacotherapy, 2006;6(2).
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to treat, diagnose, cure, or prevent any disease.
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