For the first time, scientists have recorded brain activity in a free-ranging, wild marine mammal, revealing the sleep habits of elephant seals during the months they spend at sea.
Plants & Animals
Apr 20, 2023
0
1025
Researchers at the University of Alabama at Birmingham suggest that brainwave-sensing headsets, also known as EEG or electroencephalograph headsets, need better security after a study reveals hackers could guess a user's ...
Security
Jun 29, 2017
1
2552
A remote controlled helicopter has been flown through a series of hoops around a college gymnasium in Minnesota. It sounds like your everyday student project; however, there is one caveat… the helicopter was controlled ...
Engineering
Jun 4, 2013
3
0
(Phys.org)—Spinal cord injury victims may be able to look forward to life beyond a wheelchair via a robotic leg prosthesis controlled by brain waves. Individuals with paraplegia due to spinal cord injury who are wheelchair-bound ...
(Phys.org) -- Researchers at the Usenix Security conference earlier this month demonstrated a way to get into your brain and learn facts that you don’t want to reveal. Using a commercial off-the-shelf brain-computer ...
(Phys.org) -- A research team made up of members from Indiana University, Tufts and MIT and led by Erin Treacy Solovey, a has built a brain monitoring system that offloads some of the computer related activities a person ...
Researchers from the Institute of Process Engineering (IPE) of the Chinese Academy of Sciences and Tsinghua University have developed a multifunctional hydrogel electrode with excellent conductivity, adhesion, and anti-interference ...
Bio & Medicine
Feb 22, 2023
0
175
It sounds like science fiction: controlling electronic devices with brain waves. But researchers have developed a new type of electroencephalogram (EEG) electrode that can do just that, without the sticky gel required for ...
Nanomaterials
Sep 18, 2019
1
206
Researchers at ETH Zurich have developed a new type of health-monitoring electrode that exhibits optimum adhesion to skin and can record high quality signals. Two young spin-off founders want to turn it into a marketable ...
Materials Science
Jan 15, 2018
0
119
Scientists working at Korea University, Korea, and TU Berlin, Germany have developed a brain-computer control interface for a lower limb exoskeleton by decoding specific signals from within the user's brain.
Engineering
Aug 17, 2015
3
2788
Electroencephalography (EEG) is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of 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, encephalopathies, and brain death. 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 with high (<1 mm) spatial resolution like as MRI and CT. Despite limited spatial resolution, EEG continues to be a valuable tool for research and diagnosis, especially when millisecond-range temporal resolution (not possible with CT or MRI) is required.
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 (ERPs) 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
