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Memory suppression: Difference between revisions
>Graham m Reference: Decreased connectivity between the parahippocampus and retrosplenial cortex (RSC) correlated strongly with ratings of “ego-dissolution” and “altered meaning,” implying the importance of this particular circuit |
>Graham m Reference: Decreased connectivity was observed within the DMN using the mPFC and hippocampal seeds and in a major task-positive network (TPN), the dorsal attention network (DAN), using the mFG seed |
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'''Memory suppression''' (also known as '''ego suppression''', '''ego loss''' or '''ego death''') can be described as an effect which directly inhibits a person's ability to maintain a functional short and long-term memory.<ref name="Lebedev2015">Lebedev, A. V., Lövdén, M., Rosenthal, G., Feilding, A., Nutt, D. J., & Carhart‐Harris, R. L. (2015). Finding the self by losing the self: Neural correlates of ego‐dissolution under psilocybin. Human brain mapping, 36(8), 3137-3153. https://doi.org/10.1002/hbm.22833</ref><ref name="Cahart-Harris2016">Carhart-Harris, R. L., Muthukumaraswamy, S., Roseman, L., Kaelen, M., Droog, W., Murphy, K., ... & Leech, R. (2016). Neural correlates of the LSD experience revealed by multimodal neuroimaging. Proceedings of the National Academy of Sciences, 113(17), 4853-4858. https://dx.doi.org/10.1073%2Fpnas.1518377113</ref> This occurs in a manner that is directly proportional to the dosage consumed, and often begins with the degradation of one's short-term memory. | '''Memory suppression''' (also known as '''ego suppression''', '''ego loss''' or '''ego death''') can be described as an effect which directly inhibits a person's ability to maintain a functional short and long-term memory.<ref name="Lebedev2015">Lebedev, A. V., Lövdén, M., Rosenthal, G., Feilding, A., Nutt, D. J., & Carhart‐Harris, R. L. (2015). Finding the self by losing the self: Neural correlates of ego‐dissolution under psilocybin. Human brain mapping, 36(8), 3137-3153. https://doi.org/10.1002/hbm.22833</ref><ref name="Cahart-Harris2016">Carhart-Harris, R. L., Muthukumaraswamy, S., Roseman, L., Kaelen, M., Droog, W., Murphy, K., ... & Leech, R. (2016). Neural correlates of the LSD experience revealed by multimodal neuroimaging. Proceedings of the National Academy of Sciences, 113(17), 4853-4858. https://dx.doi.org/10.1073%2Fpnas.1518377113</ref><ref name="Cahart-Harris2014">Carhart-Harris, R. L., Leech, R., Hellyer, P. J., Shanahan, M., Feilding, A., Tagliazucchi, E., ... & Nutt, D. (2014). The entropic brain: a theory of conscious states informed by neuroimaging research with psychedelic drugs. Frontiers in human neuroscience, 8, 20. https://dx.doi.org/10.3389%2Ffnhum.2014.00020</ref> This occurs in a manner that is directly proportional to the dosage consumed, and often begins with the degradation of one's short-term memory. | ||
Memory suppression is a process which may be broken down into the 4 basic levels described below: | Memory suppression is a process which may be broken down into the 4 basic levels described below: | ||
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Complete memory suppression can result in the profound experience that despite remaining fully conscious, there is no longer an “I” experiencing one's sensory input; there is just the sensory input as it is and by itself. This suppresses the otherwise nearly constant sensation in waking life of being a separate observer interacting with an external world. Although ego death does not necessarily shut down awareness of all mental processes, it does remove the feeling of being the thinker or cause of one's mental processes. It often results in the feeling of processing concepts from a neutral perspective completely untainted by past memories, prior experiences, contexts, and biases. | Complete memory suppression can result in the profound experience that despite remaining fully conscious, there is no longer an “I” experiencing one's sensory input; there is just the sensory input as it is and by itself. This suppresses the otherwise nearly constant sensation in waking life of being a separate observer interacting with an external world. Although ego death does not necessarily shut down awareness of all mental processes, it does remove the feeling of being the thinker or cause of one's mental processes. It often results in the feeling of processing concepts from a neutral perspective completely untainted by past memories, prior experiences, contexts, and biases. | ||
Ego death often synergizes with other coinciding effects such as [[personal bias suppression]], [[unity and interconnectedness]], [[spirituality enhancement]], and [[delusions]].<ref name="Lebedev2015"/> These accompanying effects further elevate the subjective intensity and transpersonal significance of ego death experiences.<ref name="Cahart-Harris2016"/></onlyinclude> | Ego death often synergizes with other coinciding effects such as [[personal bias suppression]], [[unity and interconnectedness]], [[spirituality enhancement]], and [[delusions]].<ref name="Lebedev2015"/><ref name="Cahart-Harris2014"/> These accompanying effects further elevate the subjective intensity and transpersonal significance of ego death experiences.<ref name="Cahart-Harris2016"/></onlyinclude> | ||
===Psychoactive substances=== | ===Psychoactive substances=== | ||