Positive and Negative Symptoms of Schizophrenia
Professor David Lewis explains that the symptoms of schizophrenia are typically defined as either positive or negative.
Schizophrenia is characterized by a set of symptoms. The symptoms that tend to get individuals to clinical attention are what we call the positive symptoms, which include delusions, holding a fixed false belief in the face of contrary evidence, hallucinations, which are having sensory experiences like hearing voices in the absence of an external stimulus or someone speaking. And then there are the negative symptoms, which basically can be thought of as a loss of normal function - a loss of motivation, a loss of the ability to express emotion, a loss of the ability to generate speech, a loss of the ability to experience pleasure.
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Professor David Lewis explains that positive symptoms of schizophrenia are currently more treatable than the negative symptoms.
An overview of schizophrenia-related content on Genes to Cognition Online.
Doctor Anil Malhotra the positive and negative symptoms of schizophrenia - individuals with the disorder typically have a mix of both sets of symptoms.
A review of the causes, symptoms, and treatments of schizophrenia.
Professor David Lewis discusses how the diversity of symptoms in schizophrenia is reflected in the diversity of genetic and neural causes of the disorder.
In this review of schizophrenia, the authors show how our growing knowledge of causal factors offers hope for successful preventive measures.
Professor David Lewis outlines a major cognitive symptom of schizophrenia, which is executive dysfunction - an inability to exert control over behavior.
Professor Daniel Weinberger explains that schizophrenia has been called 'the cancer of mental illness' because of the severity of its impact.
Dr. Sukhi Shergill describes the different types of hallucinations schizophrenic patients can experience.
Doctor Anil Malhotra discusses emerging research relating specific genes to positive (DISC1) and negative (e.g. dysbindin) symptoms of schizophrenia.