Sleep deprivation produces a «double hit» to the brain in this regard: there is a sharp reduction in
frontal lobe activity leading one to misjudge hunger and eat more junk and also leading to an exaggerated activation of reward centers (mostly the amygdalae) after eating.
If conditions were right, says Newberg, these two things should be enough to produce the same
temporal lobe activity to trigger an out - of - body experience.
An article in The Economist on April 14, 2011, cited a study by Carnegie Mellon University that used brain imaging to prove a 37 % decrease in
parietal lobe activity when listening to someone talk on the phone.
After training, faster reaction times were associated with lower
frontal lobe activity, which is consistent with the more energy - efficient neural activity found in younger adults.
Whether these experiences are simply right
temporal lobe activity, as many suspect, or, as Britton's work hints and Morse believes, a whole brain effect, remains an open question.
Attention disorders involve a complex interplay of genetic, biochemical, and environmental factors; there is also speculation that frontal
lobe activity is reduced in these individuals.
While all groups showed faster reaction times across sessions, the cognitive training group showed a significant increase in the association between reaction time and frontal
lobe activity.
«By holding a positive and optimistic [word] in your mind, you stimulate frontal
lobe activity.
Schizophrenics exhibit brain abnormalities that go beyond emotional disturbances and delusions, including diminished frontal
lobe activity, which results in a range of cognitive deficits.
[jounal] Dawson, G / 1992 / Frontal
lobe activity and affective behavior of infants of mothers with depressive symptoms / Chid Development 63: 725 ~ 737