And brain activation

Mathew RJ, Wilson WH, Coleman RE, Turkington TG, DeGrado TR. Marijuana intoxication and brain activation in marijuana smokers. Life Sci 1997 60 2075-2089. 

M. Carbon, Y. Ma, A. Barnes, V. Dhawan, T. Chaly, M.F. GhIlardI, D. Eldelberg, Caudate nucleus Influence of dopaminergic Input on sequence learning and brain activation In Parkinsonism, Neuroimage 21 (2004) 1497-1507. 

As the spine s vibratory frequency is quickened, neuron transmissions reach peak output and brain activity is heightened. The senses are also heightened, pushing thought through new neural pathways, opening up unexplored avenues of perception... 

Rohypnol works by stimulating brain receptors that normally bind to the neurotransmitter GABA. When GABA is bound to these receptors, neurons are "turned off" and brain activity goes down. 

It is an exotic example, as most of us lack an experiential basis for understanding it. When we deal with human consciousness we do not deal with undifferentiated energy manifesting as two opposite particles, the simple, primary phenomena with which physics deals, but with complex, interacting systems made up of untold numbers of more elementary systems constituting the structures of the mind and brain, activated by awareness and construction, consciousness (as opposed to... 

Figure 23.10 PET and brain activity. These PET scans show brain activity in a normal person left) and in a patient with Alzheimer s disease right). Red and yellow indicate relatively high activity within a region.

Owing to the lack of larger oxygen reservoirs in the body, in the event of an insufficient oxygen supply the organism reacts with a reduction in certain vital functions, such as unconsciousness with a reduction in heart and brain activity. 

Stage 1—This is the transition between waking and sleeping where if someone abruptly woke you up and accused you of dozing, you might deny it because you do not yet feel asleep. But you sink into relaxation. Your breathing and brain activity slows. You may be there for about ten minutes. 

Sayowan, W., Siripornpanich, V., Piriyapunyaporn, T. et al. 2012b. The harmonizing effects of citronella oil on mood states and brain activities. Journal of Health Research 26(2) 69-75. 

As described before, a lot of electrical activity is going on in the human body. Heart, muscle and brain activity are aU measurable because they cause a variation in electrical potential that is observable at the skin using electrodes. And that is also why the sensors that are developed to measure other physiological parameters are mainly based on electrical- and capacitive-sensing mechanisms. 

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