Machine learning & AI
Humans accomplish a phenomenal amount of tasks by combining pieces of information. We perceive objects by combining edges, categorize scenes by combining objects, interpret events by combining actions, and understand sentences ...
Nov 29, 2022
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13
Engineering
When people suffer debilitating injuries or illnesses of the nervous system, they sometimes lose the ability to perform tasks normally taken for granted, such as walking, playing music or driving a car. They can imagine doing ...
Apr 20, 2020
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7
Hi Tech & Innovation
For the many superheroes that use high-powered gadgets to save the day, there's an equal number of villains who use technology nefariously. From robots that plug into human brains for fuel in The Matrix to the memory-warping ...
Sep 23, 2019
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4
Consumer & Gadgets
Web and mobile services try to understand the desires and goals of users by analyzing how they interact with their platforms. Smartphones, for instance, capture online data from users at a large scale and low cost.
Apr 18, 2024
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10
Engineering
Researchers from Nagoya University and Keio University in Japan have estimated a person's stress levels caused by the sound of a flying car passing overhead. The research was published in the Technical Journal of Advanced ...
Oct 12, 2022
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4
Hi Tech & Innovation
The recent announcement that a young paralysed man in Ohio in the US named Ian Burkhart managed to regain the use of his fingers after having a chip implanted in his brain is an exciting step forward for science and healthcare. ...
Apr 25, 2016
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8
Automotive
Air taxis may become an important part of the U.S. transportation ecosystem, quickly carrying people relatively short distances—and eventually some may fly without a pilot aboard. NASA is helping prepare for that future ...
Oct 4, 2023
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37
Hi Tech & Innovation
Are you lying? Do you have a racial bias? Is your moral compass intact?To find out what you think or feel, we usually have to take your word for it. But questionnaires and other explicit measures to reveal what's on your ...
Feb 9, 2017
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7
Engineering
Most people find it difficult to concentrate on a specific voice in a busy environment, but for those who are hard of hearing it's especially challenging. Now, however, a new type of hearing aid, developed with the assistance ...
Mar 2, 2020
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3
Security
Your brain is an inexhaustible source of secure passwords – but you might not have to remember anything. Passwords and PINs with letters and numbers are relatively easily hacked, hard to remember and generally insecure. ...
Oct 25, 2018
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Electroencephalography (EEG) is the recording of electrical activity along the scalp produced by the firing of neurons within the brain. In clinical contexts, EEG refers to the recording of the brain's spontaneous electrical activity over a short period of time, usually 20–40 minutes, as recorded from multiple electrodes placed on the scalp. In neurology, the main diagnostic application of EEG is in the case of epilepsy, as epileptic activity can create clear abnormalities on a standard EEG study. A secondary clinical use of EEG is in the diagnosis of coma and encephalopathies. EEG used to be a first-line method for the diagnosis of tumors, stroke and other focal brain disorders, but this use has decreased with the advent of anatomical imaging techniques such as MRI and CT.
Derivatives of the EEG technique include evoked potentials (EP), which involves averaging the EEG activity time-locked to the presentation of a stimulus of some sort (visual, somatosensory, or auditory). Event-related potentials refer to averaged EEG responses that are time-locked to more complex processing of stimuli; this technique is used in cognitive science, cognitive psychology, and psychophysiological research.
This text uses material from Wikipedia, licensed under CC BY-SA
