Engineering

Scientific AI's 'black box' is no match for 200-year-old method

One of the oldest tools in computational physics—a 200-year-old mathematical technique known as Fourier analysis—can reveal crucial information about how a form of artificial intelligence called a deep neural network ...

Engineering

Creating 3D objects with sound

Scientists from the Micro, Nano and Molecular Systems Lab at the Max Planck Institute for Medical Research and the Institute for Molecular Systems Engineering and Advanced Materials at Heidelberg University have created a ...

Computer Sciences

ChatGPT takes on the tough US medical licensing exam

Dr. ChatGPT will see you soon. The artificial intelligence system scored passing or near passing results on the US medical licensing exam, according to a study published on Thursday.

Machine learning & AI

Q&A: Three questions on ChatGPT and medicine

Launched in November 2022, ChatGPT is a chatbot that can not only engage in human-like conversation, but also provide accurate answers to questions in a wide range of knowledge domains. The chatbot, created by the firm OpenAI, ...

Machine learning & AI

Video: A new generation of AI assistants

In this video, DARPA program manager Dr. Bruce Draper describes the technology he thinks could usher in the next "do-it-yourself" revolution.

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Drug

A drug, broadly speaking, is any substance that, when absorbed into the body of a living organism, alters normal bodily function. There is no single, precise definition, as there are different meanings in drug control law, government regulations, medicine, and colloquial usage.

In pharmacology, a drug is "a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being." Drugs may be prescribed for a limited duration, or on a regular basis for chronic disorders.

Recreational drugs are chemical substances that affect the central nervous system, such as opioids or hallucinogens. They may be used for perceived beneficial effects on perception, consciousness, personality, and behavior. Some drugs can cause addiction and/or habituation.

Drugs are usually distinguished from endogenous biochemicals by being introduced from outside the organism.[citation needed] For example, insulin is a hormone that is synthesized in the body; it is called a hormone when it is synthesized by the pancreas inside the body, but if it is introduced into the body from outside, it is called a drug.[citation needed] Many natural substances, such as beers, wines, and psychoactive mushrooms, blur the line between food and recreational drugs, as when ingested they affect the functioning of both mind and body and some substances normally considered drugs such as DMT (Dimethyltryptamine) are actually produced by the human body in trace amounts.

This text uses material from Wikipedia, licensed under CC BY-SA