New research hints at how psychedelics trigger rapid, lasting change at the neuronal level.
The human brain can change — but usually only slowly and with great effort, such as when learning a new sport or foreign language, or recovering from a stroke. Learning new skills correlates with changes in the brain, as evidenced by neuroscience research with animals and functional brain scans in people. Presumably, if you master Calculus 1, something is now different in your brain.
But positive experiences, which alter one's life for the better, can occur equally as fast. Think of a spiritual awakening, a near-death experience or a feeling of awe in nature. Psychedelic-assisted psychotherapyThose who've had a psychedelic experience usually describe it as a mental journey that’s impossible to put into words. However, it can be conceptualized as an altered state of consciousness with distortions of perception, modified sense of self and rapidly changing emotions. Presumably there is a relaxation of the higher brain control, which allows deeper brain thoughts and feelings to emerge into conscious awareness.
Researchers using a technique called two-photon microscopy can observe this process in living cells by following the formation and regression of spines on the neurons. The spines are one half of the synapses that allow for communication between one neuron and another. These 5-HT2A receptors that DMT activates are not only on the neuron cell surface but also inside the neuron. It’s only the 5-HT2A receptor inside the cell that facilitates rapid change in neuronal structure. Serotonin can't get through the cell membrane, which is why people don't hallucinate when taking antidepressants like Prozac or Zoloft.
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