Reference Terms
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Psychoactive drug
A psychoactive drug or psychotropic substance is a chemical substance that acts primarily upon the central nervous system where it alters brain function, resulting in temporary changes in perception, mood, consciousness and behavior.
Note: The above text is excerpted from the Wikipedia article "Psychoactive drug", which has been released under the GNU Free Documentation License.
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Mind & Brain News
November 22, 2024
Nov. 13, 2024 — Could social bonds be the key to human big brains? A study of the fossil teeth of early Homo from Georgia dating back 1.77 million years reveals a prolonged childhood despite a small brain and an ...
Nov. 7, 2024 — It's common knowledge that our brains -- and, specifically, our brain cells -- store memories. But a team of scientists has discovered that cells from other parts of the body also perform a memory function, opening new pathways for understanding how ...
Nov. 6, 2024 — Thin, flexible device could help people with visual impairments 'feel' surroundings. Device comprises a hexagonal array of 19 actuators encapsulated in soft silicone. Device only uses energy when actuators change position, operating for longer ...
Oct. 17, 2024 — Researchers have developed a novel training protocol for brain-computer interfaces in a study with rhesus monkeys. The method enables precise control of prosthetic hands using signals from the brain alone. Researchers were able to show that the ...
Latest Headlines
updated 12:56 pm ET
Nov. 20, 2024 — People with Alzheimer's exhibit a loss of motor control along with cognitive decline, and one of the earliest signs of this decay can be spotted in involuntary eye movements known as saccades. These ...
Nov. 22, 2024 — Scientists sought to better understand how humans evolved to become so skilled at thinking about what's happening in other peoples' minds. The ...
Nov. 22, 2024 — While it's well known that sleep enhances cognitive performance, the underlying neural mechanisms, particularly those related to nonrapid eye ...
Nov. 22, 2024 — Working with week-old zebrafish larva, researchers decoded how the connections formed by a network of neurons in the brainstem guide the fishes' gaze. The study found that a simplified artificial ...
Nov. 21, 2024 — In a polarized nation, there is one thing that nearly all Americans agree on, according to a recent study: sports are good for us. Researchers found that more than 9 out of 10 Americans agreed that ...
Nov. 20, 2024 — A recently published meta-analysis reveals an advantage in sports-related information processing compared to non-athletes. The data consisted of 21 studies involving a total of 1455 participants. ...
Nov. 20, 2024 — A study by researchers presents their low cost, scalable methodology for the early identification of individuals at risk of developing dementia. While the condition remains incurable, there are a ...
Nov. 22, 2024 — Polybrominated diphenyl ethers, or PBDEs, are fire-retardant chemicals that are found everywhere. A mouse study reports that probiotic supplementation can reduce the negative impacts of PBDEs on ...
Nov. 21, 2024 — Researchers have developed a groundbreaking microscopy method that enables detailed three-dimensional (3D) RNA analysis at cellular resolution in whole intact mouse brains. The new method, called ...
Nov. 21, 2024 — New research reveals how low confidence drives feedback-seeking, enhancing learning with insights for education and rehabilitation ...