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This post is by  Eisuke Sakakibara , psychiatrist working at  The University of Tokyo Hospital . In this post he writes about his paper “ Intensity of experience: Maher’s schizophrenic delusion revisited ” recently published in Neuroethics. Delusion is one of the most frequently discussed themes in philosophy of psychiatry, and this is my second publication regarding delusions. In my first paper, entitled “ Irrationality and pathology of beliefs ,” I proposed that not all delusions are pathological, and some delusions are formed without any physical or mental dysfunction. In my second paper , I focused on delusions accompanied by schizophrenia. As for schizophrenic delusions, it is beyond question that they are the result of dysfunction of some kind. The problem, then, is what kind of dysfunction is relevant for the development of schizophrenic delusions. The theory of schizophrenic delusion has developed by the consecutive works made by Brendan Maher. He proposed in 1974 th...

In this post, Anneli Jefferson , Leverhulme Early Career Fellow at the University of Birmingham summarizes her paper on the nature of brain disorder, recently published in Synthese. A long-standing project pursued by some psychiatrists is to show that mental disorders are brain disorders and that mental dysfunction can best be explained as brain dysfunction. But what exactly is the relationship between mental disorders and brain disorders and when is a mental disorder a brain disorder? This is the question I address in my paper. Some psychiatrists believe that it follows from the acceptance of physicalism that all mental disorders are brain disorders. If all mental states are brain states, shouldn’t all disordered mental states be disordered brain states? Many philosophers have resisted this conclusion, appealing to the hardware/software distinction to argue that even if dysfunctional mental processes are realised in the brain, this does not mean that the underlying brain processes a...