Quote:
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These results raise the possibility that chronic exposure to low, subanesthetic concentrations of ketamine, while not affecting cell survival, could still impair neuronal morphology and thus might lead to dysfunctions of neural networks.
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I wonder exactly what they mean by this? I understand what
neuronal morphology is after a quick
google but I would think that the structure of your brain and the ways certain cells are connected with other ones is constantly changing due to a number of reasons. So in this sense "impairment" and "dysfunction" have a very subjective meaning, because it's fairly easy to see impairment and dysfunction at higher doses. However at lower doses, where many recreational drugs are useful medicines, one man's impairment may be another mans source of strength.
For instance, let's take two theoretical individuals, call 'em shaggy 'n scooby, and make them fairly similar in most physical and even psychological ways to some extent. Shit, why not give them similar psyches, too? Let's say they're both diagnosed with various forms of depression and/or anxiety and have both tried unsuccessfully with medication and therapy to treat their disease. So they try MXE/k/any other-drug-would-work-in-this-scenario in small doses once or twice a day in order to either medicate physical symptoms or to do psychological work.
Now let's say that Shaggy starts off enjoying the detached thoughts and distant vistas of feeling that MXE gives him and uses it to step back from his problems and find solutions. After several more experiences of a similar nature with MXE he starts to see the drug has having a very pronounced abstract flavor mentally and having a zen peace emotionally. After a month or more his brain has probably adapted to releasing other chemical signals that support his initial assessment, so that perhaps the MXE at times has an especially opiate quality of relaxation & warmth and stimulates his mind. In this case, I think it would be crazy to say that whatever neuronal morphology happened as a result of MXE use, it impaired him. I understand that certain neurons work in certain ways that are most beneficial but as people develop and become unbalanced they need different things to balance them.
On the other hand, let's take Scooby. Let's say his first MXE experience is really weird & alien and he feels distant from himself and people. Well, this too will reinforce itself, and if Scooby keeps trying MXE he'll either keep having the same problems and they'll get worse & worse. Unless he manages to reframe the drug by using a new experience as a bench mark (so one really has to seek out novelty) he'll either give up the drug after a few times or become hopelessly addicted in a downward spiral(see: slag)
Most people fall into some sort of mixture though.
so yeah, while obviously drugs are going to change the way your brain works, I think with recreational drugs scientists are
way too eager to brand something harmful.