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The ECG method is more accurate than the PPG method in measuring heart rate variability. [39] [43] Biofeedback therapists use heart rate variability (HRV) biofeedback when treating asthma, [44] COPD, [45] depression, [46] anxiety, [47] fibromyalgia, [48] heart disease, [49] and unexplained abdominal pain. [50] Research shows that HRV ...
Heart rate variability visualized with R-R interval changes Electrocardiogram (ECG) recording of a canine heart that illustrates beat-to-beat variability in R–R interval (top) and heart rate (bottom). Heart rate variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. It is measured by the ...
Cardiac monitoring generally refers to continuous or intermittent monitoring of heart activity to assess a patient's condition relative to their cardiac rhythm. Cardiac monitoring is usually carried out using electrocardiography , which is a noninvasive process that records the heart's electrical activity and displays it in an electrocardiogram ...
In most cases, vagal tone is not measured directly. Instead the processes affected by the vagus nerve – specifically heart rate and heart rate variability – are measured and used as a surrogate for vagal tone. Increased vagal tone (and thus vagal action) is generally associated with a lower heart rate and increased heart rate variability.
Emotional eating, also known as stress eating and emotional overeating, [1] is defined as the "propensity to eat in response to positive and negative emotions". [2] While the term commonly refers to eating as a means of coping with negative emotions, it sometimes includes eating for positive emotions, such as overeating when celebrating an event or to enhance an already good mood.
Overeating occurs when an individual consumes more calories in relation to the energy that is expended via physical activity or expelled via excretion, leading to weight gain and often obesity. Overeating is the defining characteristic of binge eating disorder. [1] Overeating can be a symptom of binge eating disorder or bulimia nervosa. [2] [1]
In some cases, biofeedback does not match EEG, while parameters such as electromyography (EMG), galvanic skin resistance (GSR), and heart rate variability (HRV) can do so. Many biofeedback systems treat disorders such as attention deficit hyperactivity disorder (ADHD), sleep problems in children, teeth grinding, and chronic pain. EEG ...
Wrist heart rate monitor (2009) Heart rate monitor with a wrist receiver. Heart rate is measured by finding the pulse of the heart. This pulse rate can be found at any point on the body where the artery's pulsation is transmitted to the surface by pressuring it with the index and middle fingers; often it is compressed against an underlying ...