Dreams, Religious Revelations and the neurochemistry behind them

I read a fascinating article Why are dreams such potent vehicles for the supernatural which details how the world’s great religions and spiritual journeys emerged from dreams and visions and explains the neurochemistry behind this and why dreams are such potent vehicles for the supernatural.

In short, under the right conditions, hallucinogens such as psilocybin can produce intense spiritual and mystical experiences. They do so, in part, by producing the same neurochemical milieu (high dopamine and low serotonin in the brain’s limbic sites, and high glutamate in prefrontal sites) as found during REM sleep.

It is no wonder then that when we dream or when REM invades waking consciousness – as it does during periods of sleeplessness, stress, daydreams or acid trips – it can produce ‘visions’. Given all this, the phenomenological features of dreams and hallucinations of course overlap. Dreams, in short, are transient ‘trips’ and, when they forcibly and suddenly break through into waking life, they sometimes become visions or hallucinations.

If dreams and visions originate in the same neurobiology that produces psychedelic experiences, of course they can fuel religious experiences and ideas. REM sleep generates the combustible materials that fuel the fire of the religious imagination. 
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The raw experience of the dream and the intense work of interpretation explain why the spirit realm was considered absolutely real for most of humanity’s history. People directly experienced the spirit realm in their dreams.

The link between REM dreams and spiritual experience suggests that religion may be nothing but delusional dreaming and hallucinations. The implications for organized religions including Judaism are obvious.