Substances/Content: Difference between revisions

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A '''psychoactive substance''' is a chemical substance—other than a nutrient or essential dietary ingredient—that alters brain function to produce temporary changes in sensation, perception, mood, consciousness, cognition, and behavior.

Psychoactive substances have been used by humans for a variety of purposes since recorded history. For example, they ~~can~~ be ~~taken recreationally~~ for their ~~pleasurable~~ effects and novelty value, as [[entheogens]] for ritual or spiritual purposes, or as scientific research ~~tools~~ for studying the brain and mind. The latter two have particular relevance for practitioners of [[psychonautics]].

Psychoactive substances have been used by humans for a variety of purposes since recorded history. For example, they may be used as medicine, as recreational substances for their euphoric effects and novelty value, as [[entheogens]] for ritual or spiritual purposes, or as scientific research probes for studying the brain and mind. The latter two have particular relevance for practitioners of [[psychonautics]].

The '''''Psychoactive Substance Index''''' ('''PSI''') is designed to catalog and provide relevant, accurate, and unbiased information for any and all mind-altering substances known to humankind, with a special focus on those with potential applications as mind-expanding tools.

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 A '''psychoactive substance''' is a chemical substance—other than a nutrient or essential dietary ingredient—that alters brain function to produce temporary changes in sensation, perception, mood, consciousness, cognition, and behavior.
-Psychoactive substances have been used by humans for a variety of purposes since recorded history. For example, they can be taken recreationally for their pleasurable effects and novelty value, as [[entheogens]] for ritual or spiritual purposes, or as scientific research tools for studying the brain and mind. The latter two have particular relevance for practitioners of [[psychonautics]].
+Psychoactive substances have been used by humans for a variety of purposes since recorded history. For example, they may be used as medicine, as recreational substances for their euphoric effects and novelty value, as [[entheogens]] for ritual or spiritual purposes, or as scientific research probes for studying the brain and mind. The latter two have particular relevance for practitioners of [[psychonautics]].
 The '''''Psychoactive Substance Index''''' ('''PSI''') is designed to catalog and provide relevant, accurate, and unbiased information for any and all mind-altering substances known to humankind, with a special focus on those with potential applications as mind-expanding tools.