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Brainwave entrainment is a colloquialism for 'neural entrainment', [25] which is a term used to denote the way in which the aggregate frequency of oscillations produced by the synchronous electrical activity in ensembles of cortical neurons can adjust to synchronize with the periodic vibration of external stimuli, such as a sustained acoustic ...
Electrocorticographic movie showing changes in high-frequency broadband gamma activity in specific cortical regions when visual stimuli are presented during a face-/place-naming task. Gamma waves may participate in the formation of coherent, unified perception , also known as the problem of combination in the binding problem , due to their ...
Low-amplitude beta waves with multiple and varying frequencies are often associated with active, busy or anxious thinking and active concentration. [ 4 ] Over the motor cortex , beta waves are associated with the muscle contractions that happen in isotonic movements and are suppressed prior to and during movement changes, [ 5 ] with similar ...
For example, the interference of two pitches can often be heard as a repetitive variation in the volume of the tone. This amplitude modulation occurs with a frequency equal to the difference in frequencies of the two tones and is known as beating. The semitone scale used in Western musical notation is not a linear frequency scale but logarithmic.
Traditional classification of the frequency bands, that are associated to different functions/states of the brain and consist of delta, theta, alpha, beta and gamma bands. . Due to the limited capabilities of the early experimental/medical setup to record fast frequencies, for historical reason, all oscillations above 30 Hz were considered as high frequency and were difficult to investigate.
This alpha activity is centered in the occipital lobe, [22] [23] although there has been speculation that it has a thalamic origin. [24] The second occurrence of alpha wave activity is during REM sleep. As opposed to the awake form of alpha activity, this form is located in a frontal-central location in the brain.
Campbell joins that weird list. Campbell was essentially benched Thursday with the return of Dre Greenlaw to the lineup. When Greenlaw was banged up in the second half, the team wanted Campbell to ...
The relaxation response reduces the body's metabolism, heart and breathing rate, blood pressure, muscle tension, and calms brain activity. It increases the immune response, helps attention and decision making, and changes gene activities that are the opposite of those associated stress.
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