**5. Conclusions**

This research revealed that smelling "Zuko" incense rubbing into the hands and putting the hands together promoted to excite a few specific brain areas, for example, the orbitofrontal cortex of olfactory area, inner areas of the prefrontal cortex, left language F5 regions, occipital regions of left imaging area V1, and so on in the human brain.

A P300 response peak which was known as a kind of ERP responses in brain waves was researched as a response of "cognitive function" by using "oddball paradigm" experiment.

In this MEG experiments, P300m response using "auditory oddball paradigm" was measured both before smelling "Zuko" incense and after smelling "Zuko" incense.

In our experiments, evoked neuronal activity was recorded by the MEG and the alpha-amylase value in the subject's saliva was also measured in the stage before and after smelling "Zuko" incense and measuring the response of MEG in the brain.

From the summary of results in 3.5.1-3.5.3 in Section 3.5, we can conclude the distinct activities as follows. Both smelling "Zuko" incense only without putting the hands and smelling "Zuko" incense into the hands with putting the hands promoted to activate mainly a few specific brain areas such as the OFC frontal regions, left inner frontal region F5 language area, left inner occipital regions V1 visual areas, and so on.

As a cognitive P300m response, it was shown that the result with smelling "Zuko" had shorter latency time; the bigger the peak height, the larger the active wave area S than without smelling "Zuko." From these typical results of P300m responses, it can be considered that a possibility of improving cognitive ability of P300 peak was shown by smelling "Zuko" incense using "auditory oddball paradigm."

From these typical results of P300m responses, it can be considered that a possibility of improving cognitive ability of P300 peak was shown by smelling "Zuko" incense using "auditory oddball paradigm."

An alpha-amylase value was shown as a characteristic index of stress which was more increasing up after smelling "Zuko" incense than before smelling although male/female and habit/no habit with putting the hands in daily life. From these results of measuring alpha-amylase value in saliva, it can be considered that something stress on smelling "Zuko" incense was usually given to the subject.

From these results of measuring alpha-amylase value in saliva, it can be considered that something stress on smelling "Zuko" incense was usually given to the subject.

From an individual analysis, we can also find out that subject B5 obtained in orbitofrontal cortex, subject A5 and B4 obtained in the inner frontal area, subject A3, A4, and B2 obtained in the occipital cortex V1 as an estimation active area in the *Smelling "Zuko": Incense Rubbing into the Hands and Smelling the Hands Activates… DOI: http://dx.doi.org/10.5772/intechopen.88987*

brain clearly show almost all larger value of alpha-amylase after smelling "Zuko" and putting the hands and MEG experiments before these experiments. These results are considered to show something stress by smelling "Zuko" incense and putting the hands for the response of subjects A3, A4, B2, B3, B4, and B5 which showed large activity in a few special areas in the brain.

From the above results, we consider that the F5 language area in the left frontal cortex and V1 visual area were promoted to activate by smelling "Zuko" incense rubbing into the hands with putting the hands together.

Alpha-amylase showed something stress like for smelling "Zuko" incense with putting the hands, and the specific mirror neuron and default-mode network showed activity of the special areas in the brain.

We concluded that new specific effects both in smelling "Zuko" incense into the hands and imitating the behavior of putting the hands together can be considered to promote excitation of the higher activities and to make larger changes in the brain activities dynamically in a few specific regions in the human brain.
