Nope - you propose a persistent neuroplastic change -- I called BULLSHIT then and I call BULLSHIT now.
All of the examples you provided refer to CHRONIC stress and neuroplastic change.
https://www.ncbi.nlm.nih.gov/pubmed/18524625 - "Acute stress regulation of neuroplasticity genes in mouse hippocampus CA3 area--possible novel signalling pathways" "
Stress exposure can lead to the precipitation of psychiatric disorders in susceptible individuals, but the molecular underpinnings are incompletely understood. We used forced swimming in mice to reveal stress-regulated genes in the CA3 area of the hippocampus. To determine changes in the transcriptional profile
4 h and 8 h after stress exposure microarrays were used in the two mouse strains C57BL/6J and DBA/2J, which are known for their differential stress response. We discovered a surprisingly distinct set of regulated genes for each strain and followed selected ones by in situ hybridisation. Our results support the concept of a phased transcriptional reaction to stress. Moreover, we suggest novel stress-elicited pathways, which comprise a number of genes involved in the regulation of neuronal plasticity. Furthermore, we focused in particular on dihydropyrimidinase like 2, to which we provide evidence for its regulation by NeuroD, an important factor for
neuronal activity-dependent dendritic morphogenesis."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3091695/ "The pivotal role of stress in the precipitation of psychiatric diseases such as depression is generally accepted. This study aims at the identification of genes that are directly or indirectly responding to stress. Inbred mouse strains that had been evidenced to differ in their stress response as well as in their response to antidepressant treatment were chosen for RNA profiling after stress exposure.
Forced swimming as acute stressor was applied to C57BL/6J and DBA/2J mice and resulted in sets of regulated genes in the
paraventricular nucleus of the hypothalamus (PVN),
4 h or 8 h after stress. Although the expression changes between the mouse strains were quite different, they unfolded in phases over time in both strains.
This search for stress-regulated genes in the PVN revealed its impact on interesting genes (GNAi2 and APP) and a novel gene network. In particular the expression of APP in the PVN that is governing stress hormone balance, is of great interest.
The reported neuroprotective role of this molecule in the CNS supports the idea that a short acute stress can elicit positive adaptational effects in the brain."
Of course acute stress elicits neuroplastic changes if chronic stress does as well, and they may certainly be different than chronic stress related adaptations but its not like it isn't incremental. Its similar to someone believing that evolution goes - Homo Erectus, Homo Erectus, Homo Erectus,
bam Homo Sapien - its really much more gradual and subtle. It would be very hard to truly draw the distinction between an evolutionary ancestor and our present day selves occurring at any given being, but there are incremental changes. There is no means to change tomorrow if we can't change today.
The STRESS of the experience on their HPA axis is the CAUSITIVE FACTOR - period -- not any action of MDMA itself
Furthermore I will argue that acute and chronic stress related neuroplastic changes are subject to modulation by neurotransmission, or rather that the activity-dependent neuroplasticity is modulated by stress hormones. See activity-dependent neuroplasticity. Neurotransmission is well known to alter plasticity...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2728073/ - "Signaling Mechanisms Linking Neuronal Activity to Gene Expression and Plasticity of the Nervous System"
"Sensory experience and the resulting synaptic activity within the brain are critical for the proper development of neural circuits. Experience-driven synaptic activity causes membrane depolarization and calcium influx into select neurons within a neural circuit, which in turn trigger a wide variety of cellular changes that alter the synaptic connectivity within the neural circuit. One way in which calcium influx leads to the remodeling of synapses made by neurons is through the activation of new gene transcription. Recent studies have identified many of the signaling pathways that link neuronal activity to transcription, revealing both the transcription factors that mediate this process and the neuronal activity–regulated genes.
These studies indicate that neuronal activity regulates a complex program of gene expression involved in many aspects of neuronal development, including dendritic branching, synapse maturation, and synapse elimination."
I still think you're really misunderstanding memory and learning.
I don't think that stress hormone related adaptations are the
entire picture, I see some differences in PTSD and LTCs that could be due to the state of neurotransmission induced by drugs at the time. For example HPPD, yes visual snow can very likely occur with sleep deprivation and anxiety in PTSD but I'm not aware of
full on HPPD being present in PTSD a short time after the inciting event, and certainly not at the rate that it is present in LTCs and classical psychedelic related depersonalization syndromes. Depersonalization is also frequently co-morbid with HPPD, which makes one wonder if HPPD is more primary to these syndromes and deserves more attention.