Relation Between the Autonomic Nervous System and Buddhism
A talk by Gudo Wafu Nishijima -
about the relation between the autonomic nervous system and Buddhism is only my
supposition, but I have been utilizing it in explaining Buddhism for many years.
Since I first arrived at this proposition many years ago, I have not met a
case that caused me to change my theory. Therefore I would like to express my
primitive proposition to the audience for their reference. Of course, I am only
a Buddhist monk and do not have sufficient knowledge of physiology, psychology,
and so forth. However, in my experience I have found it very useful to explain
Buddhism on the basis of scientific knowledge, and so I would like to express my
proposition on this occasion.
1. Fundamental basis
The autonomic nervous system is divided into two parts: the
sympathetic nervous system and the parasympathetic nervous system.
The two parts generally function in opposite ways. For example, generally
when the sympathetic nervous system (I'll call it the
gSNSh) is stronger than the parasympathetic nervous system (the
gPNSh), people are prone to be tense, to have a weaker appetite, to suffer
from insomnia, and so forth. On the other hand, when the PNS is stronger than
the SNS, people are prone to feel dull, to have a strong appetite, to sleep
heavily, to have rather high blood pressure, and so forth.
Therefore the state of a stronger SNS is not preferable, and
neither is a state of a stronger PNS.
I guess that in some way Gautama Buddha found this kind of important
fact by his experience in his sincere life. Of course, at that time there was no
scientific knowledge about the autonomic nervous system, but I think that
through his enormous efforts and his genius he knew this kind of fact
2. Oneness between body and mind
Buddhists believe in the theory of oneness between body and mind
absolutely. Therefore I became interested in knowing about the mutual relation
between the state of the autonomic nervous system (the gANSh) and
the human mind, and I arrived at the bold proposition that when people have a
stronger SNS they are prone to be idealistic and when people have a stronger
PNS they are prone to be materialistic.
In human society there are so many people who are very spiritual and
ascetic, but sometimes they can be rather aggressive and criticizing towards
others. However there is also another type of person. These people are very
attached to physical enjoyments and do not to like to work so much, and tend to
be pessimistic and hesitant.
When I was young I read two books by an American
psychiatrist named Karl Menninger. One was called "Man against
Himself" (Harcourt, 1938,1956) and the other was "Love and Hate"
against Himself" explains the psychology of a person who commits suicide.
The author says that a person who commits suicide is not a weak person, but is usually a very strong and aggressive person. But for some reason, when his or
her aggressive attack against others fails, the attack is then directed against
himself or herself. When I read this description, I had to agree with Dr.
"Love and Hate" Karl Menninger insisted that if we want to be healthy
in body and mind, it is necessary for us to maintain love and hate equally.
Before that time I was taught that only love is valuable, and that hate should
be avoided, but when I read Dr. Menninger's idea it was impossible for me to
disagree with his opinion.
In Buddhism we believe that it is not good to be emotional, and so we
should not be angry or greedy and so on. And when I compare such teachings with
the theory of Karl Menninger, I can notice the reason why Gautama Buddha
recommended the Middle Way to us.
3. Buddhism and the ANS
A fundamental principle of Buddhism is that it denies both idealistic
belief and materialistic belief. This suggests that we should
avoid having both a state where our SNS is stronger and a state where our PNS is
We can say
that ideas represent only the motion of our brain cells, and therefore they are not
real in themselves. Likewise we can say that sense stimuli just represent
excitement in our sense organs, and so they also are not real entities either.
Therefore I think Buddhism emphasizes the importance of equality or
equilibrium between the SNS and the PNS. In Buddhism there is a Chinese and
Japanese phrase, Jijuyo Zanmai, which explains the state in Zazen. The word Jijuyo
is divided into two parts, one is Jiju
and the other is Jiyo. Jiju means gto accept self,h and Jiyo means gto utilize self.h And Zanmai means a state in Zazen. Therefore we can interpret that gto
accept selfh suggests the function of the PNS, and gto utilize selfh
suggests the function of the SNS. So we can think that Jijuyo Zanmai means a state of equality between the SNS and PNS.
But it is very difficult, and almost impossible, for us to make the ANS
balanced, because the ANS originally has a function of autonomy. But in such
situation, I think that Gautama Buddha has presented us with a very effective
and calm method to make the ANS balanced, and that is Zazen.
Why does Zazen have such excellent power? For many years after I began to
study Buddhism I didnft know the reason. Then about 10 years ago, because of
the recommendation of my student, named Mike Cross, I read a book entitled gA
Teacherfs Window into the Childfs Mindh (Fern Ridge Press) by Sally
Goddard, an American psychiatrist and teacher.
In her book
she explains that in our human life the important term of development is the
first 7 or 8 years after birth, and in particular, the first 15 months. She says
that if a child receives some unfortunate influence during that term, the child
will suffer from rather serious effects on his or her personality, and it will
be very difficult for the child to get rid of those bad effects during his or
her life. However she says that, gUltimately, the cerebellum is responsible
for regulating the postural reflexes and muscle tone, and thus maintaining the
Goddardfs book I could get an outline of the reason why Zazen is useful in
making us better.
4. The meaning of Zazen
Zazen is not a means to attain genlightenment,h but is just an act to
experience the balance of the ANS.
Zazen is just practice of keeping the spine straight vertically in the
The state in Zazen is called Shinjin
Datsuraku, which means, gdropping body and mind off.h When we think
about the meaning of gdropping body and mind off,h we can interpret that
when our ANS is balanced, the balance of the ANS can be felt like
plus/minus zero. So we sometimes feel that consciousness of our body seems to
be zero, and consciousness of our mind also seems to be zero. Such a state is
called gdropping body and mind off.h
Therefore, by practicing Zazen everyday we can become accustomed to
having balance in our ANS, and that state is just the state of Buddhas.
* Some researchers at Harvard Medical School have done research that indicates meditation activates control of the autonomic nervous system.
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