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Rate dependence of the action potential is a fundamental property of cardiac cells and alterations can lead to severe cardiac diseases including cardiac arrhythmia and sometimes sudden death. [3] Action potential activity within the heart can be recorded to produce an electrocardiogram (ECG). This is a series of upward and downward spikes ...
As an action potential (nerve impulse) travels down an axon there is a change in electric polarity across the membrane of the axon. In response to a signal from another neuron, sodium- (Na +) and potassium- (K + )–gated ion channels open and close as the membrane reaches its threshold potential. Na + channels open at the beginning of the ...
Various foods. This is a categorically organized list of foods.Food is any substance consumed to provide nutritional support for the body. [1] It is produced either by plants, animals, or fungi, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, and minerals.
The U.K.'s internet regulator Ofcom has published an open letter to social media platforms raising concerns about the use of their tools being used to incite violence.
The launch of OpenAI’s new GPT-4o “omni” model in May has sent ChatGPT’s app revenue soaring. After a big jump following the model’s release, the mobile version of OpenAI’s chatbot has ...
Rabbit’s r1, the AI assistant gadget whose hype train has somewhat slowed since its debut at CES, has some updates to share — but probably not anything that will change its critics’ minds ...
The use of phone location tracking to keep tabs on COVID-19 is becoming increasingly common, and the US appears to be no exception. Wall Street Journal sources say federal (via the CDC), state and ...
Both are taken from recordings at the mouse neuromuscular junction. End plate potentials ( EPPs) are the voltages which cause depolarization of skeletal muscle fibers caused by neurotransmitters binding to the postsynaptic membrane in the neuromuscular junction. They are called "end plates" because the postsynaptic terminals of muscle fibers ...