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LSD Deactivates the Brain's Fear Center, Study Finds

sigmond

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by Derek Beres: big think

LSD reached America thanks to schizophrenia. Though Albert Hoffman mistakenly synthesized the potent psychedelic in 1938 in Switzerland, it wasn’t until Viennese doctor Otto Kauders told a group of mental health professionals about the substance’s ability to drive one “temporarily crazy” in 1949 that researchers began listening. German refugee Max Rinkel immediately ordered a shipment from Hoffman’s company.

Interestingly, psychiatrist Robert Hyde decided to conduct his normal hospital rounds after ingesting the first American dose. He grew irritated, believing to have received a bunk dose. Problem is, Hyde was normally a pleasant man. He might not have achieved a schizophrenic state (his dose was rather low), but the LSD certainly had an emotional effect.

The government jumped aboard. The CIA’s covert Project MKUltra was instituted in hopes of manipulating Russian spies to spill secrets. Officially sanctioned in 1953 (though trials began earlier), for two decades the US government secretly dosed a range of unsuspecting mental health patients, prostitutes, drug addicts, and prisoners in attempts of discovering LSD’s abilities.

Possession of LSD became illegal in 1968; the last sanctioned FDA study on its effects took place 12 years later. Being categorized as a Schedule 1 drug (no medical value), few researchers were willing to touch it. But a recent uptick in studies have found that LSD is not medically useless. It is being tested in treatment programs for alcoholics and drug abusers. Microdosing has become a certified fad. And a recent study published in Nature found LSD might help you regulate your emotions.

Twenty healthy participants with no or minimal (one time only) experience with psychedelics ingested either 100μg LSD or a placebo. They were then shown fearful or neutral faces while undergoing brain scans. Three brain regions were focused on: the amygdala, the seat of emotional processing, along with the fusiform gyrus and medial frontal gyrus, both areas that are responsive to fearful faces.

The researchers’ hypothesis proved correct: LSD reduced amygdala activity. Those who took the substance were less emotionally volatile in response to fearful faces. To test against the possibility that the psychedelic effects distorted faces, researchers cite a similar response in subjects receiving 200μg LSD to fearful faces, who experienced no alteration in the recognition of neutral, happy, or angry faces.

This leads researchers to believe that LSD might help people suffering from anxiety disorder and depression. By “reducing perception of negative emotions and social cognitive deficits,” LSD could soon find widespread usage in the psychiatrist’s arsenal of remedies. Of course dose and mental history are important factors, but so far the results are positive.

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interesting.
seems a lot of people become fearful on LSD, so this doesn't seem to make sense at first glance, but the fact it alters your perception in deep, indescribable ways is clear enough. i hope to see more of these fascinating neurological studies of LSD and other psychedelics, after years of them being suppressed.
 
It could be very interesting if LSD somehow could help treat people with severe anxiety.

Bad trips from LSD is probably - I don't know much about psychedelics - the result of high(er) doses like 100ug plus. Normal dosing of LSD in controlled environments as well as micro-dosing and the effect this will have on people with anxiety could be an interesting research area.

"Lysergic acid diethylamide (LSD) is used recreationally and has been evaluated as an adjunct to psychotherapy to treat anxiety in patients with life-threatening illness. LSD is well-known to induce perceptual alterations, but unknown is whether LSD alters emotional processing in ways that can support psychotherapy. We investigated the acute effects of LSD on emotional processing using the Face Emotion Recognition Task (FERT) and Multifaceted Empathy Test (MET). The effects of LSD on social behavior were tested using the Social Value Orientation (SVO) test. Two similar placebo-controlled, double-blind, random-order, crossover studies were conducted using 100 μg LSD in 24 subjects and 200 μg LSD in 16 subjects. All of the subjects were healthy and mostly hallucinogen-naive 25- to 65-year-old volunteers (20 men, 20 women). LSD produced feelings of happiness, trust, closeness to others, enhanced explicit and implicit emotional empathy on the MET, and impaired the recognition of sad and fearful faces on the FERT. LSD enhanced the participants' desire to be with other people and increased their prosocial behavior on the SVO test. These effects of LSD on emotion processing and sociality may be useful for LSD-assisted psychotherapy." (Dolder et al., 2016)

Without having spend more than 10 minuts looking at the research, it seems that research support that LSD is beneficial in treatment of depression, anxiety et cetera. The next step would be more research on the effects of LSD-assisted psychotherapy compared to the effects of psychotherapy alone.
 
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