Brain Disorder

Brain Disorders
PS104 Introduction to Phycology

Brain Disorder
There are approximately 26 million people worldwide with schizophrenia and approximately 2 million adults with schizophrenia in the United States. Schizophrenia is a major mental illness affecting the normal functioning of the brain. It is characterized by psychotic symptoms and a diminished range of expressions of emotion. Schizophrenia is a mental disorder characterized by a breakdown of thought processes and by a defect of typical emotional responses. Some symptoms include hearing hallucinations, paranoid delusions, or disorganized speech and thinking, isolation, and problems paying attention. The onset of symptoms typically occurs in young adulthood. Diagnosis is based on observed behavior, the patient's reported experiences and sometimes the family observation of the patient.
Electroencephalogram (EEG) have been significant in studies of schizophrenia. The EEG reflects a combination of excitatory and inhibitory postsynaptic electrical potentials recorded between pairs of electrodes on the scalp. The EEG is a technique that records the electrical activity, or brain waves produced by the brain’s neurons through the use of electrodes that are placed around the participant’s head (Stangor, 2010). In an EEG test, flat metal disc are placed onto your scalp using a sticky substance. These electrodes pick up the electrical signals from your brain and send them to an EEG machine, which will record the signals as wavy lines onto paper or on a computer. The EEG machine records your brain's electrical activity as a series of traces. Each trace corresponds to a different region of the brain. An EEG is a painless procedure that takes 30 to 45 minutes with rarely causes of any side effects.
There are many different neurotransmitters in the brain. Two that have been found to be involved in schizophrenia symptoms are dopamine and glutamate. Dopamine is primary involved   in movement, motivation, and...