PubMed · 2397354
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L Fernando. 1990. Multiple personality disorder.. https://doi.org/10.1192/bjp.157.1.150b
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It is usually believed that drugs of abuse are smuggled into the United States or are clandestinely produced for illicit distribution. Less well known is that many hallucinogens and dissociative agents can be obtained from plants and fungi growing wild or in gardens. Some of these botanical sources can be located throughout the United States; others have a more narrow distribution. This article reviews plants containing N,N-dimethyltryptamine, reversible type A monoamine oxidase inhibitors (MAOI), lysergic acid amide, the anticholinergic drugs atropine and scopolamine, or the diterpene salvinorin-A (Salvia divinorum). Also reviewed are mescaline-containing cacti, psilocybin/psilocin-containing mushrooms, and the Amanita muscaria and Amanita pantherina mushrooms that contain muscimol and ibotenic acid. Dangerous misidentification is most common with the mushrooms, but even a novice forager can quickly learn how to properly identify and prepare for ingestion many of these plants. Moreover, through the ever-expanding dissemination of information via the Internet, this knowledge is being obtained and acted upon by more and more individuals. This general overview includes information on the geographical range, drug content, preparation, intoxication, and the special health risks associated with some of these plants. Information is also offered on the unique issue of when bona fide religions use such plants as sacraments in the United States. In addition to the Native American Church's (NAC) longstanding right to peyote, two religions of Brazilian origin, the Santo Daime and the Uniao do Vegetal (UDV), are seeking legal protection in the United States for their use of sacramental dimethyltryptamine-containing "ayahuasca."
From ancient times on, our dream processes were thought to be the uncovering of unknown connections. It may be that there is some basis to this belief and that dreams truly represent a mirror of our unconscious and not only random processes moving along according to some brain "computation." These ideas are supported by some findings that involve connections among dissociative processes, hypnosis, and multiple personality disorder (MPD). From this point of view, MPD represents a very interesting theoretical problem, which may be understood as an extreme example of the dissociative nature of the human psyche. This in turn leads to an understanding of the complex structure of the human psyche and corresponds perfectly to our experience, which says that the pathological often sheds new light on the normal and physiological.
The neurological interest on functional or psychogenic disorders (mental or physical disturbances with no organic basis, generally unleashed by stressful situations) has been receiving increasingly more interest over the last few years. In this article we review concepts, terms and classifications of these disorders, very different over time and among different authors. Psychogenic disorders are divided into: a) dissociation (with memory, consciousness and self-identity impairment), and b) disturbances with somatizations, divided into somatoform (unconscious), factitious (voluntary search for patient's role) and malingering (searching for material gain). Special emphasis is placed on conversion or hysteria, included in somatoform disorders. New findings in functional neuroimaging are analyzed. These new data suggest an important role of unconscious and involuntary inhibition in loss of volition (similar to hypnosis and different from malingering). Normal activity in certain brain areas (motor or sensory cortex) is blocked by other areas related to emotional integration (anterior cingular and orbitofrontal cortex). The neurologist's role is important to achieve an early diagnosis of psychogenic disturbances, particularly conversive ones. This means the use of fewer economic resources and better prognosis for the patient.