Breakthrough in Pain Relief: Scientists Uncover Brain Circuits Behind Placebo Effect
July 24, 2024
The placebo effect, a well-documented phenomenon in clinical research, involves the brain's ability to alleviate symptoms without actual treatment, complicating therapeutic evaluations.
Neuroscientists have identified specific brain circuits in mice linked to the placebo effect relieving pain, offering potential for new pain management options like drugs or neurostimulation.
Through meticulous experiments focusing on single nerve cell precision, Scherrer's team discovered the biological basis of the placebo effect, highlighting the involvement of distinct brain circuits, neurons, and synapses.
Activation of a neural pathway in mice, confirmed by optogenetics, reduced pain perception, indicating a promising target for future drug development.
The study revealed the cerebellum's role in cognitive pain modulation, suggesting innovative approaches for managing chronic pain with fewer side effects.
Luana Colloca from the University of Maryland views the discovery as a potential avenue for pain management utilizing drug-induced placebo effects.
The research, supported by various grants and involving collaboration across institutions, advanced understanding of the placebo effect's neural mechanisms.
Questions persist regarding the individual variability and duration of the placebo effect, prompting further exploration.
Summary based on 5 sources
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Sources

Nature • Jul 24, 2024
How do placebos ease pain? Mouse brain study offers clues
ScienceDaily • Jul 24, 2024
Neuroscientists discover brain circuitry of placebo effect for pain relief
Medical Xpress • Jul 24, 2024
Neuroscientists discover brain circuitry of placebo effect for pain relief
Newsroom • Jul 24, 2024
Scientists Discover Brain Circuits for Placebo Effect Pain Relief | Newsroom