Abstract: The authors observed the effects of He-Ne laser quided into brain byoptic fiber on the conditioned avoidance response (CAR) and the contents of6 neurotransmitters in the corpus striatum of 54 rats divided into four groups. After CAR training for 3 minutes the animals were decapitated and thetransmitters in corpus striatum were assaied. The results showed that only the group of He-Ne laser radiation to thecaudate prevailed over the operated control group in learning behavior index.Both norepinephrine and dopamine in corpus striatum of this group weresimultaneously increased.These were the specific brain chemical changes.

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