Brain – Interface between Mind and Body

April 22, 2016; revised September 22, 2019

The brain is Not the Mind

1. Contrary to what scientists believe, our minds are not in the brain (this is another prediction from Buddha Dhamma that will be proven correct in the future).

  • The “mind door” where citta (or thoughts) arise is at the hadaya vatthu is not located not in our physical bodies. It is in the manomaya kaya of the gandhabba; see, “Gandhabba (Manomaya Kaya)- Introduction.”
  • The gandhabba has a subtle body and it is not a “body” in the sense we usually think about. It is more like an energy field) that overlaps the physical body; see, “Ghost in the Machine – Synonym for the Manomaya Kaya?“.
  • The hadaya vatthu overlaps the heart in the physical body. When we hear traumatic news, we feel a burning sensation close to the heart, and not in the head. We don’t say, “Oh, my head felt like burning when I heard the news.” It is the heart area that feels it. (Head may start hurting later if one keeps thinking about the loss).
  • On the other hand, when we overuse our five physical senses or when we think hard about a difficult problem, it is the head that hurts. Because in those situations, the brain has to do a lot of processing. While watching a movie, our brains work overtime to convert those sensory inputs from the eyes (cakkhu indriya) and the ears (sota indriya). When we think about a hard problem, the mana indriya in the brain has to work hard; see below.
Two Overlapping “Bodies” – Physical Body and Gandhabba (Mental Body)

2. A physical body is a temporary shelter or a “shell” for the gandhabba‘s subtle body. The gandhabba receives sense inputs from the outside world via the physical body. See, “Body Types in Different Realms – Importance of Manomaya Kaya,”

3. Before entering the mother’s womb, the gandhabba has a very fine “body,” more like an “energy packet.” Thus, it cannot experience taste or touch, even though some can “digest odors” and become a bit denser.

  • A gandhabba waiting for a womb usually is about the size of a fully-grown human, but it has very little “matter” that it is not visible to us. At the moment of “okkanthi” or entering the mother’s womb, he/she will enter THROUGH the mother’s body and collapse to the size of the zygote when taking possession of it; see, “What does Buddha Dhamma (Buddhism) say about Birth Control?“.
  • Thus a gandhabba, when outside waiting for a suitable womb, is just like a ghost shown in the movies. Of course, a human cannot see it even using technological advances. It is much smaller in mass than the first cell formed by the union of the mother and father, the zygote.
  • The physical body grows starting with that single cell (zygote) using the nutrition from the mother.  After the baby is born, it grows to the full size of an adult by consuming food.
  • Thus it is useful to have this visual, where a very fine gandhabba trapped inside a physical body of over a hundred pounds controls it.
Brain – Interface Between the Physical Body and Gandhabba

4. Once inside a physical body, gandhabba has to use the physical body to interact with the outside world. It is like being trapped in a solid shell. Initially, its mind will be in the bhavanga state (see, “Citta Vithi – Processing of Sense Inputs“) and will not be conscious about its environment, except for body sensations.

  • In a human, the brain first processes the signals coming through the “physical senses” (eyes, ears, etc.) The brain transmits that information to the five pasada rupa located in the gandhabba. Those pasada rupā then pass that information to the hadaya vatthu (seat of the mind) in the gandhabba; see, “Gandhabba (Manomaya Kaya)- Introduction.”
  • That is how our minds receive information from the external world.
  • Now the question arises: “How do the sense inputs coming through the eyes, ears, tongue, nose, and the body, are transmitted to the pasada rupa located close to the hadaya vatthu?”.  Note that the hadaya vatthu overlaps the physical heart.

5. It is the brain that acts as the intermediary between those physical sense inputs and the five pasada rupa. It processes the incoming information to a form that can be understood by the mind (hadaya vatthu).

  • First, the sense inputs coming into the physical body through the eyes, ears, tongue, nose, and body go to specific regions of the brain. That has been well-researched by scientists over the past hundred years. The following figure shows the specific areas of the brain that analyze the data from the five senses.

Brain and five Senses

  • Science is unable to explain how the mind comprehends the corresponding signals after the processing of those signals. For example, in vision, there is no “picture” formed in the back of the head; see “On Intelligence” by Jeff Hawkins (2005) for a helpful discussion.

6. The signals for vision, sounds, smells, and taste come into the body through specific body parts. In contrast, the touch sensations can come from anywhere in the body, and conveyed via an intricate system of nerves:

Nervous_System

  • These nerve signals go to the brain for processing (see the “touch and pressure” processing area in the figure in #5 above).
Gandhabba (Mental Body) Overlaps the Physical Body

7. By the way, it is essential to note that the misty gandhabba has a similar “nervous system” that overlaps the physical nervous system shown above. Yes. that is extremely fine, more like an “energy field”. That is not entirely relevant to the present discussion, but the physical body is there to impart kamma vipaka via body aches, diseases, and injuries.

8. The signals from the other four senses go to specific brain areas (indicated in the figure in #5 above) via specialized neural pathways. For example, the optical nerve carries the visual signal to the brain:

Eye Indriya

  • Once the brain processes those sensory inputs from the five physical senses, they are “transmitted” to the corresponding five pasada rupa in the gandhabba (manomaya kaya.) See below.
Mana Indriya in the Brain

9. So far, we have identified five of gandhabba‘s “windows to the outside world” from his/her “shell” or the physical body: eyes, ears, nose, tongue, and the body.

  • What about the “dhamma” that are the finest rupa (these are called mano rupa) that interact with the physical body? That is how we think about “random things” out of the blue. For example, we may be washing dishes in the kitchen, and all of a sudden, thoughts about a friend or a relative may come to the mind.
  • Thoughts about a friend — who may be a thousand miles away — come through the mana indriya in the head (inside the brain). Of course, science is not aware of that.
  • We discussed this in a previous post: “What are Dhamma? – A Deeper Analysis.”.

10. So, how do the signals processed in the brain due to incoming vision, sound, smell, taste, touch, and dhamma are passed to the five pasada rupa and the hadaya vatthu? Details in “Gandhabba (Manomaya Kaya)- Introduction.”

  • It is well-known that there are electromagnetic brain waves of different types (alpha, beta, theta, and gamma). I will write a post on this in the future. These waves are called “kirana” in the Tipitaka.
The Origin of Citta Vithi

11. When information comes to one of the five pasada rupa, it passes on that signal to the hadaya vatthu by impinging (hitting) the hadaya vatthu. That results in the hadaya vatthu vibrating 17 times, just like a clamped blade vibrates a certain number of times when hit by an object; see, “Gandhabba (Manomaya Kaya)- Introduction” and “Citta Vithi – Processing of Sense Inputs.”

  • That is the origin of a citta vithi of 17 citta. Each citta in a citta vithi corresponds to a single vibration of hadaya vatthu. This 17 thought-moment time is the lifetime of a hadaya rupa ( vibrational energy) of the hadaya vatthu.
  • It is a common mistake to take this to mean that any rupa has a lifetime of 17 thought moments. That is a terrible mistake; see, “Does any Object (Rupa) Last only 17 Thought Moments?“.
  • It is not possible to describe these details in one or even several posts. One may need to look through other posts to clarify some concepts. The “Search” button on the top right is an excellent resource for this task.

12. Any of the five pasada rupa has to strike the hadaya vatthu to pass on its signal. However, signals from the mana indriya can exchange information with the hadaya vatthu directly.

  • When the mana indriya interacts with the hadaya vatthu, that also results in a citta vithi. Such manodvara citta vithi do not have a fixed length.
  • Still, only one of the six sense-signals can be in contact with the hadaya vatthu at a given time. But since the process is swift, billions of citta vithi can run through the hadaya vatthu “in the blink of an eye.”
Two Inter-Dependent “Bodies”

13. Therefore, this whole process involves interaction between two overlapping systems. The physical body and the corresponding subtle “energy body” of the gandhabba.

  • When the gandhabba escapes from the body under stressful situations, it can float above the physical body. Then the physical body becomes inert until the gandhabba returns to it; see, “Manomaya Kaya and Out-of-Body Experience (OBE).”

14. Thus it is clear that the brain plays a significant role in shaping our future. Similarly, the five physical senses play vital roles too.

  • If one of the five physical senses are damaged, we lose the corresponding “window to the external world.” We will not be able to see If both eyes are damaged. If the sensors inside the ears go bad, we will not be able to hear, etc.
  • But the most critical is, of course, the brain. If the brain is damaged, sensory signals can not be processed, and we will not be able to interact with the external world. Thus, being brain dead is virtually equivalent to being dead.
  • However, if one’s brain becomes damaged due to an accident, for example, it will not affect the gandhabba inside. It is just that the gandhabba will not be able to communicate with the external world. And if damage to the brain results in the death of the physical body, the gandhabba will just come out of the dead body and will wait for a suitable womb.
Next Existence Determined by Gati and Kamma Vipaka

15. It does not matter whether one gets killed due to an accident or dies due to an illness or old age. The gandhabba‘s future is determined by his/her gati (or gathi), past kamma (kamma bija), etc.

  • If the physical body dies in an accident, the gandhabba will immediately come out of the dead body. Then it will wait for a suitable womb if there is still more kammic energy left for the human bhava (in an accident, that is likely).
  • But if one gets to old age and dies or dies due to illness — and if one has exhausted kammic energy for the human bhava — then the cuti-patisandhi will happen at that time. If one is to become a deva, a deva will appear instantaneously in the corresponding deva world. If one is to become an animal, an animal gandhabba will emerge from the dead body and will have to wait for a suitable womb to become available.

16. It is also clear why we need to take good care of the body, our sense faculties, and of course, our brains. gandhabba‘s (our) ability to make decisions depends on all those faculties working in optimum condition.

  • We have a short lifetime of around 100 years to get rid of our defiled (immoral) gati. We also need to cultivate good (moral) gati, and comprehend the real nature of this world (anicca, dukkha, anatta), and be free from future suffering.
  • We need to try to get to the Sotapanna stage of Nibbana and be free from the four lowest realms (apayas). At least, we must make progress towards that goal so that in a future life, we will have a tihetuka birth that makes it easier to attain Nibbana.
  • To accomplish those things, we need to eat well, exercise well, and take care of our bodies to perform optimally. It is also necessary to stay away from drugs and alcohol. And to associate with those who have similar goals (and stay away from those with bad habits).
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