The problem with testing these in a proper sleep lab (the test is called a polysomnogram) is that you generally have at least 22 wires attached to you to measure brain activity (EEG), eye movements (EOG), skeletal muscle activation (EMG), heart rhythm (ECG), respiration, and sometimes peripheral pulse oximetry.
This allows researchers to measure brain activity doing normal tasks, creating a baseline to detect and monitor diseases.
We used a new gadolinium-contrast magnetic resonance perfusion scanning technique to measure brain activity.
They used a method called transcranial magnetic stimulation to measure brain activity in the dance spectators.
Once in the lab, participants were hooked up to functional M.R.I. scanners, which measure brain activity.
Using magnetic resonance imaging to measure brain activity, he found that the brain had a limited capacity for carrying out two tasks at once.
This is partly because it is hard to measure brain activity in someone who is moving, and partly because metal cannot be taken into an MRI scanner.
Mind reading: Using EEG to measure brain activity, researchers found that some patients diagnosed as being in a vegetative state could respond to simple commands.
The test takes about half an hour or less, says Gee. Twenty electrodes on the scalp measure brain activity while the athlete sits in a chair.
Researchers use electrophysiology to measure brain activity, light sheet microscopy to make high-resolution observations of living tissue and optogenetics to control living tissue with light.
Researchers used an MRI scanner to measure brain activity in people as they listened to sounds recorded from either natural or artificial environments.
