Electrodermal activity vs galvanic skin response

#Electrodermal activity vs galvanic skin response full

The most basic indicators of the state of the autonomic nervous system are heart rate and electrodermal activity (EDA) the former is influenced by the sympathetic and parasympathetic systems, whereas the latter is under sympathetic control only. The use of the autonomic responses as markers of emotion, attention, decision-making, motor preparation, anticipation of reward or punishment and unconscious detection has grown considerably since the 1980s. The prediction of suicidal risk and identification of suicidal patients will only be possible when we have an accurate picture of the interplay between biological and psychosocial factors. Nevertheless, there is currently a lack of biomarkers for the psychiatric field, in particular for suicidal behaviour. Nevertheless, the potential utility of EDA in diagnosis, prevention, and treatment planning for depression and suicidal behaviour, should be thoroughly studied.Д«iological abnormalities may be risk factors for depression, suicidal behaviour or completed suicide a recent review has identified the following major categories of potential biological predictors of suicide attempt behaviour: (1) results of structural and functional brain imaging and (2) biochemical and genomic findings relating to the major neurotransmitters (serotonin, catecholamines, GABA and glutamate), the hypothalamic pituitary adrenal (HPA) axis, the inflammasome, lipids and neuroplasticity. Electrodermal hypoactivity seems to be a reliable feature of depression and a valid marker of suicidal risk. This limits the generalisability of the results and makes it difficult to draw clear conclusions about the role of EDA in real-world settings. Most of the studies summarised in this review are quite outdated and employed a variety of designs and methods to evaluate EDA. Although EDA has been shown to be a valid, sensitive marker of suicidal ideation, suicide attempts and violent suicidal behaviour, it also seems to be influenced to some extent by antidepressant treatment. A few studies provided evidence that EDA can be used to differentiate acutely suicidal subjects from depressed patients who are not severely suicidal. There is also preliminary evidence that monitoring EDA may help to differentiate the phases of mood disorders.

The studies were fairly consistent in maintaining that hypoactive electrodermal response is an established feature of patients affected by depression.

ResultsДЎ287 articles were screened and 77 relevant studies were identified and included in the systematic review. A preliminary synthesis of findings was developed using tables, thematic analysis and quality ratings.

#Electrodermal activity vs galvanic skin response full

The initial screening of articles was based on titles and abstracts then the full text was reviewed. We searched MEDLINE, Scopus, Cochrane Library, and Web of Science databases, following PRISMA guidelines.

We aimed to review EDA research systematically, focusing on EDAвЂ™s usefulness as a biomarker for depression and suicidal behaviour. Electrodermal activity (EDA) and other peripheral autonomic electrical parameters have been used as indicators of emotional states, including depressive states and suicidal state.