Neuroscientists cannot disprove God’s existence – Spiritual experience cannot be reduced to mere sensations in the brain, says Brendan Kennedy
Friday, January 8th, 2010Each time I walk through a forest park and absorb the smell of the trees and the undergrowth, and listen as the breeze natters with the leaves, I feel myself enveloped and held in a calm and tranquil peace. In this intimate union with past generations I feel united with my God. Being touched in this manner is a spiritual experience for me. But is this a real experience of the activity of the spirit or is it some form of hallucinatory experience?
Writing in the Sunday Times, Jonathan Leake and Andrew Sniderman reported on how neuroscience has been exploring the phenomenon of religious experience. They considered whether the findings from research into particular regions of the brain meant that “people are programmed to get a feeling of spirituality from what is nothing more than electrical activity in these regions”.
I wonder if people could be deluding themselves by regarding as spiritual various experiences that are nothing more than the activity of brain chemistry. Bruce Hood, professor of developmental psychology at Bristol University, claimed in his most recent work, Supersense: From Superstition to Religion – the Brain Science of Belief, that the search for a reasonable explanation for various experiences can lead to beliefs that go beyond natural explanations. He suggested that religious beliefs evolved and were essential in binding people together. Leake and Sniderman explain that neuroscientists “suggest that during evolution, groups of humans with religious tendencies began to benefit from their beliefs, perhaps because they tended to work together more efficiently and so stood a better chance of survival”.
The assertion that the brain developed religious beliefs through evolution is reminiscent of Freud’s hypothesis that religion developed as a means of disavowing the primal crime of parricide wherein sons killed their despotic tyrannical father. In Moses and Monotheism he suggested that this primal crime was repeated over thousands of years, and the resultant guilt led to rituals designed to disavow the sin.
In Freud and Modern Society, Robert Bocock explained that, according to Freud, this repetition caused the rituals of disavowal to enter the archaic heritage where it became the foundation of civilisation and religion. Freud’s hypothesis can be reconciled with the findings of neuroscience if the repeated rituals could have brought about a mutation within the brain leading to what Professor Hood refers to as the evolution of religious belief.
Dr Michael Persinger, of Laurentian University in Sudbury, Ontario, designed a helmet to concentrate magnetic fields on to the temporal lobes in the brain. One of the most common sensations reported by the 900 people he tested was of a “sensed presence”, as if someone else was in the empty room. This seems similar to the sensation I experience of God’s presence as I walk among the trees.
Neuroscientists explain that cocaine causes a build-up of the neurochemical dopamine which is responsible for keeping brain cells operating at a level necessary to accommodate our needs and aims. Under normal circumstances, dopaminergic cells maintain the level of dopamine available by launching molecules of dopamine to stimulate the nerve cells, and by drawing previously released molecules back into themselves when it is necessary to decrease the amount available.
Cocaine, however, interferes with this process by preventing the dopaminergic cells from drawing the dopamine back into themselves resulting in a dopamine build-up that over-activates the cells, resulting in the “high” that is comparable to a spiritual experience.
Evidence shows that sensations similar to spiritual experiences can be induced by drugs, as in the case of cocaine, or by the manipulation of the temporal lobes of the brain, as demonstrated by Dr Persinger. The question is: do these findings conflict with the traditional view of spiritual experiences?
Professor V S Ramachandran, of the University of California at San Diego, suggests that they are not necessarily incompatible with faith. He holds that, while spiritual sensations may be the result of the activity of brain chemistry, the findings from neuroscience may also indicate that the chemistry within the human brain is receptive to experiences of the spirit.
In her book Fingerprints of God: The Search for the Science of Spirituality, Barbara Bradley Hagerty explores the concept of God as a chemist who adjusted the chemicals in our brains so that we can gain access to the spirit. She suggests that our physical bodies are an integral part of our make-up and spiritual experiences will, therefore, be mediated through our physical bodies.
Of course, what she suggests regarding God as chemist is not to be taken literally. What she is exploring is the concept that God works through our human nature in communicating with us, and our human nature has very important and indispensable physical components that cannot bypassed. If God chose to bypass our physical make-up and communicate directly without need of the chemistry in our brain there would not have been need of the Incarnation.
Could it be that some sensations are experienced as a result of chemistry in the brain, while other different, but similar, sensations are experienced as a result of the activity of the spirit, and that each experience is registered similarly in the brain? In one instance a person may be experiencing sensations that can be naturally explained, whereas on other occasions the person may be responding to a spiritual experience that is beyond natural explanation.
Spiritual writers in the past have all too frequently tended to undervalue the importance of the body by regarding it as a hindrance to experiencing the activity of spirit. The Incarnation was oftentimes portrayed as God condescending to assume human form, whereas the truth underlying this mystery is that of God’s deep respect for our physical make up. Science, on the other hand, has tended to dismiss as superstitious any experience that cannot be empirically measured.
Neuroscience and spirituality should complement one another. The greater our insights into the functioning of the brain the greater will be our appreciation of the interconnectedness of the body and spirit in the make-up of our nature. It could be of great benefit to our understanding of human nature if both these sciences worked in harmony rather than having each defend their position by disparaging that of the other.
Brendan Kennedy is presently working as an addiction counsellor in west Belfast and is a guest lecturer on psychodynamic therapies to students of the doctoral course in Clinical Psychology at the Queen’s University in Belfast. He holds masters degrees in Theology and Psychoanalytic Studies




