Language suppression (also known as aphasia) is medically recognized as the decreased ability to use and understand speech. This creates the feeling of finding it difficult or even impossible to vocalize one's own thoughts and to process the speech of others. However, the ability to speak and to process the speech of others doesn't necessarily become suppressed simultaneously; a person may find themselves unable to formulate a coherent sentence while still being able to perfectly understand the speech of others.
Generally, this effect can be divided into four broad categories:
- Expressive (also called Broca's aphasia): difficulty in conveying thoughts through speech or writing. The person knows what she/he wants to say, but cannot find the words he needs. For example, a person with Broca's aphasia may say, "Walk dog," meaning, "I will take the dog for a walk," or "book book two table," for "There are two books on the table."
- Receptive (Wernicke's aphasia): difficulty understanding spoken or written language. The individual hears the voice or sees the print but cannot make sense of the words. These people may speak in long, complete sentences that have no meaning, adding unnecessary words and even creating made-up words. For example, "You know that smoodle pinkered and that I want to get him round and take care of him like you want before." As a result, it is often difficult to follow what the person is trying to say and the speakers are often unaware of their spoken mistakes.
- Global: People lose almost all language function, both comprehension and expression. They cannot speak or understand speech, nor can they read or write. This results from severe and extensive damage to the language areas of the brain. They may be unable to say even a few words or may repeat the same words or phrases over and over again.
- Anomic (or amnesiac): the least severe form of aphasia; people have difficulty in using the correct names for particular objects, people, places, or events.
Language suppression is often accompanied by other coinciding effects such as analysis suppression and thought deceleration. It is most commonly induced under the influence of heavy dosages of antipsychotic compounds, such as quetiapine, haloperidol, and risperidone. However, it can also occur in a less consistent form under the influence of extremely heavy dosages of hallucinogenic compounds such as psychedelics, dissociatives, and deliriants. This is far more likely to occur when the person is inexperienced with that particular hallucinogen.
Compounds within our psychoactive substance index which may cause this effect include:
- Psilocybin mushrooms
- Salvinorin A
Anecdotal reports which describe this effect within our experience index include:
- Experience: 5-EAPB (60mg) + 2-FMA (20mg) + 4-AcO-DMT (10mg) - Emotional catharsis
- Experience: 550mg DPH - My First Time on DPH
- Experience: 6mg:DOC - Carpet shop hell
- Experience:1000 Morning Glory seeds - Rediscovering the Self
- Experience:10mg & 20mg Intravenous DPT HCl - Familiar Shapes, Experiencing Death, Immersed in The Light
- Experience:120µg LSD - First Bad Acid Trip, Psychosis
- Experience:2 tabs DOB - My DOB Nightmare
- Experience:2.5g Syrian rue + 6g Mimosa Hostilis - Becoming God (my second experience with unity)
- Experience:2.5g Syrian rue + 6g Mimosa Hostilis - My first experience with unity
- Experience:20x Extract - a tall humanoid figure wearing a white cloak
- Experience:225ug LSD + 9g cubensis - Galactic Melt and the Meverse
- Experience:2mg 25C-NBOMe - Experimental trip to test personal limits of NBOMes
- Experience:2mg Etizolam - Here be dragons
- Experience:3.5g Syrian rue + 10g Mimosa Hostilis
- Experience:300µg ETH-LAD - Turned Inside Out
- Experience:4-HO-MiPT / A care free psychedelic getaway
- Experience:400mg DXM + 300mg DPH – Bacterial friends
- Experience:5.3g psilocybe cubensis - Dimensional Circumstance and the Fabric of Understanding
- Experience:5g Mushrooms - Failed attempt at a Terence Mckenna style trip.
- Experience:60mg Zolpidem - A Delirious Adventure
- Experience:700mg - Joining the 700 club
- Experience:700mg - To the dextroverse.
- Experience:700mg Diphenhydramine trip
- Experience:7500mg - Analysis of gabapentin
- Experience:800 seeds LSA - My First Trip Ever
- Experience:DXM and Cannabis: 100mg - Unexpected Strong Trip
- Experience:Diazepam (20/10mg, Oral) - Comfortably Drunk
- Experience:Psilocybin Mushroom (0.16 g, Oral) - Dosage Independent Intensity
- Experience:Unknown Dose DOC (Insufflated) - Overdosing and Terifying Ego Death
- Experience:~150mg MDA(oral) - a case of mistaken identity
- What Is Aphasia? — Types, Causes and Treatment, National Institute on Deafness and Other Communication Disorders (NIDCD)
- Chien, Ching-Fang; Huang, Poyin; Hsieh, Sun-Wung (2017). "Reversible global aphasia as a side effect of quetiapine: a case report and literature review". Neuropsychiatric Disease and Treatment. Volume 13: 2257–2260. doi:10.2147/NDT.S141273. ISSN 1178-2021.
- Iqbal, M. M., Aneja, A., Rahman, A., Megna, J., Freemont, W., Shiplo, M., Nihilani, N., Lee, K. (August 2005). "The Potential Risks of Commonly Prescribed Antipsychotics". Psychiatry (Edgmont). 2 (8): 36–44. ISSN 1550-5952.
- Sinha, Preeti; Vandana, V.P.; Lewis, Nikita Vincent; Jayaram, M.; Enderby, Pamela (2015). "Evaluating the effect of risperidone on speech: A cross-sectional study". Asian Journal of Psychiatry. 15: 51–55. doi:10.1016/j.ajp.2015.05.005. ISSN 1876-2018.
- Dell'Erba, Sara; Brown, David J.; Proulx, Michael J. (2018). "Synesthetic hallucinations induced by psychedelic drugs in a congenitally blind man". Consciousness and Cognition. 60: 127–132. doi:10.1016/j.concog.2018.02.008. ISSN 1053-8100.
- Kjellgren, Anette; Jonsson, Kristoffer (2013). "Methoxetamine (MXE) – A Phenomenological Study of Experiences Induced by a "Legal High" from the Internet". Journal of Psychoactive Drugs. 45 (3): 276–286. doi:10.1080/02791072.2013.803647. ISSN 0279-1072.