Hallucination Psilysibin Flashcards

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1
Q

Psilocybin street name

A

Shrooms

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2
Q

How many species?

how can you identify them?

A

200 that have psilocybin

blue stem?

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3
Q

Intake

A

Ingestion

injection reduces “high” time by half

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4
Q

what is active in them?

A

The metabolite psilocin

first pass metabolism

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5
Q

Characteristics?

A

Libid-soluble indole similar to LSD (Tryptamine)

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6
Q

qualitive differences in drug effects

Low

High

A

Low: (4-5 mg) social, warm down to earth feelings (less confusion, more grounded with self

high: 15+mg resemble LSD, but extremely prone to Bad trips

problem highs 2-5 hrs despite does

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7
Q

Psilocybin effects

A

Similar to LSD but less intense

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8
Q

Psilocybin effects
partial agonist

Serotonin

A

Serotonin (5-HT2A)

  • effects: distort time perception, timing, and rhythm
  • subjective feeling of slowing down
  • time passes slower
  • inability to coordinate with any tempo above 2-2.5 seconds (prefrontal cortex)
  • at low doses, increase in sense of humour (insula?)
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9
Q

Psilocybin effects
partial agonist

dopamine

A

Basal ganglia

  • speculation: this might involve timed performance
  • problem: No affinity for the D2 receptor
  • may relate to the “permissive” hypothesis
  • speculation: responsible for relaxed feelings at low doses
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10
Q

Psilocybin Abuse Potential:

Tolerance

Acute

A

Acute:
4-7 days to dissipate
-more than once a week results in diminished effects

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11
Q

Psilocybin Abuse Potential:

Tolerance

Cross tolerance

A

-LSD and phenethylamine

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12
Q

Psilocybin Abuse Potential:

Tolerance

potentiation

A

MAO inhibitors prolong the high

-potential “complication for MDD

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13
Q

Psilocybin Abuse Potential:

dependance

A

No observable dependance

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14
Q

Psilocybin Abuse Potential:

Indirect effect

A

Death as a result of mushroom misidentification

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15
Q

Therapeutic use

A

Reduction of 5-HT2a receptors

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16
Q

Therapeutic use
Reduction of 5-HT2a receptors

alleviation of what>

A

OCD symptoms

17
Q

Therapeutic use
Reduction of 5-HT2a receptors

Anxiolutics is what?

A

Reduction occurs even after high doses

-implies biochemical, not emotional effect

18
Q

Therapeutic use
Reduction of 5-HT2a receptors

what was the “good friday” experiment

A
  • increase mystical/spiritual meaning, positive changes in attitude/behaviour
  • effects can be seen for weeks/mounths after treatment
  • higher effectiveness, lower chances of toxixity, no known side effects
  • evidence for similar effects with LSD except with siminished likelihood for bad trips
19
Q

Ibotenic Acid

characteristics

A

No street name
structurally similar to Glutamate
-non-selective glutamate receptor agonist

Functionally similar to acetylcholine

  • Agonist to NMDA
  • metabolite Musciol also active
20
Q

Ibotenic Acid
characteristics
Ingested (~1hr)

Subjective effect

objective

A

Euphoria, vivid coloured hallucinations

Sedation, Dissociation

  • Excitotoxicity leading to brain-damage causes subjective effects
  • injection used in lesion-dependant research
21
Q

Ibotenic Acid
characteristics

Dextromethorphan does what?

A

Protects against exitotoxicity

  • low-affinity binding antagonism
  • implied sililar mechanism