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Wave activity answers (942)

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What Is a Delta wave?

A: A delta wave is a type of brain wave seen during Stage Three sleep, also known as slow wave sleep or deep sleep. This stage of sleep is believed to be important for physiological function. Studies have shown, for example, that after sleep deprivation, people experience more Stage Three sleep, as though their brains are trying to make up for the period of deprivation. People also tend to be extremely confused when they are woken from this stage of sleep, indicating that the consciousness was very far away from the waking world. Like other brain waves, the delta wave can be identified on an electroencephalogram, in which electrical activity in...

How does brain activity differ from stage to stage?

A: ... the first stage, low-frequency, low-amplitude theta waves characterize brain activity. Stage 2 sleep, and the brain moves into low-frequency, high-amplitude waves. Stage 3 signals an increase of low-frequency, high-amplitude delta waves, and at Stage 4 sleep these delta waves account for more than half of all brain wave activity ......


Should I be worried about my EKG saying "inferior and anterior T wave changes are nonspecific?"?

A: I had abnormal T waves and I was terrified just like you. I went to a cardiologist and there was nothing wrong. If you are still concerned then there is nothing wrong with going to another doctor for a second opinion, or asking your doctor for a referral to a cardiologist just to be safe. Many medical centers offer heart screenings that aren''t too expensive. If you are suffering from anxiety it''d be worth another doctor''s visit just for the peace of mind! I was a paramedic a few years ago, and also worked in an ER. The 12 lead EKG''s report "non-specific T-wave abnormalities" because they have been programmed with a baseline rhythm. Every person who gets an EKG will have a slightly different readout from the one the machine...


Inverted T wave

A: Dear Simon, You"re not going to keel over, or get sick in any way with inverted T waves in III and aVF. They"re almost certanly normal, tho I"d need to see the EKG to be sure.  Can you  attach it to an email to dwr1@wcrichmond.org, or mail to me at 1500 Westbrook Court, CYA 1105, Richmond VA 23227-3366, USA?  Maybe just look at again yourself.  If the QRS (the big sharp waves just before the T waves) is mostly downward or equally  up and down in III and F,  then Inverted T is normal. Don"t hesitate to write back if this note doesn"t really answer your questions. David Richardson...

Forgot to use exo-perm waving lotion activator

A: It might have curled. You need the activator for the perm to heat up to allow it to penetrate the hairs cuticle so that it can mould it into shape. If her hair has not curled, she will need to repeat it again after 2 weeks....


How to Regulate Brain waves

A: Biofeedback therapy is a method of refocusing thoughts or brainwaves to produce a more relaxed, pain-free state. The body produces beta brain waves when in a relaxed state and alpha brain waves when in an active state. The process of biofeedback, also called neurofeedback, is a method for regulating your brain waves from alpha to beta. Simple at-home relaxation techniques can help you regulate brain waves....


What is/are T-waves? Husband recently had a stress test at our local hospital and was told that his t-waves wasflipped. What does that mean? How serious is this? Controlled by meds?

A: Hi, The heart has an action (pumping) and a rest phase (between pumps). The waves on the ECG depict electricalchanges during the action and rest phases. The heart has 4 chambers surrounded by muscles that pump the blood.The shape (upright or inverted) is determined largely by the left ventricle which is the strongest pumpingchamber, as it must push the blood all the way to the head and all the way to the toes. The shape of the waveswill change if the activity of the heart muscles also change. Hence, if the blood supply to the left ventricleis compromised during exercise, the electric recording of the ECG will be inverted, as it will read theelectrical pulses from the other chambers (the dominant pattern is lost, as...


How to Control Brain waves

A: Brainwaves are a reading of the electrical activity between neurons in the brain at any given time. Much can be learned by monitoring brainwaves, which are affected by emotional reaction to stimuli and other stressing and relaxing influences. Brain disturbances, such as epilepsy, also result in frenetically altered brainwave activity. Learning to control your brainwaves can help improve your general mood and keep you more focused and less distracted in day-to-day tasks. Controlling your brainwaves requires regular practice, commitment and discipline....


heart arrythmia or t wave inversion

A: Dear Sherry, Skipped beats are normal heart events, normal in the senses that: 1) about half of us have them, 2) they are easy to understand as normal carciac activity from knowledge of the heart"s electrical system, and 3) they don"t mean you have heart disease or will in the future develop heart disease or any catastrophe.  Even if your heart skips every other beat, 505 of the beats,  all is well.  Blood tests won"t help and a second opinion may confuse you even more.  Please ignore the skipped beats as harmless. Please write back if this note is unclear or doesn"t answer all your questions. David Richardson Sherry, low-lying hemidiaphragm means one half of the diaphragm lies lower than usual.  The diaphragm is the sheet of...
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