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Abnormally excessive or synchronous neuronal activity in the brain can cause seizures. These symptoms are characteristic of the neurological disorder known as epilepsy. Epilepsy is typically diagnosed with an EEG test. [6] However, the effectiveness of MEG in the diagnosis of neocortical epilepsy has also been established. [7]
EEG can detect abnormal electrical discharges such as sharp waves, spikes, or spike-and-wave complexes, as observable in people with epilepsy; thus, it is often used to inform medical diagnosis. EEG can detect the onset and spatio-temporal (location and time) evolution of seizures and the presence of status epilepticus.
By recording the event in question on video and EEG simultaneously, a clear diagnosis can usually be obtained. [23] Laboratory testing can detect rising blood levels of serum prolactin if samples are taken in the right time window after most tonic-clonic or complex partial epileptic seizures. However, due to false positives and variability in ...
Classified as a "conversion disorder" by the DSM-IV, a psychogenic disease is a condition in which mental stressors cause physical symptoms matching other disorders. The manifestation of physical symptoms without biologically identifiable cause results from disruptions in normal brain function due to psychological stress.
A 2022 update in the DSM, the manual professionals use to diagnose mental illness, acknowledged the gender differences in autism. However, many in the community don’t think it goes far enough.
An electroencephalogram (EEG) is an electrical recording of the activity of the brain taken from the scalp. An EEG can be used to diagnose seizures , sleep disorders , and for monitoring of level of anesthesia during surgery.
EEG electrodes detect electrical signals produced by neurons to measure brain activity and MEG uses oscillations in the magnetic field produced by these electrical currents to measure activity. A barrier in the widespread usage of MEG is due to pricing, as MEG systems can cost millions of dollars.
Complaints of electromagnetic hypersensitivity may mask organic or psychiatric illness: in a recent psychological model of mental disorder, [20] Sébastien Point proposed to consider it as a specific phobia. Diagnosis of those underlying conditions involves investigating and identifying possible known medical causes of any symptoms observed. [1]