The Open-Focus Brain


Title: Why You Eat What You Eat: The Science Behind Our Relationship with Food
Authors: Les Fehmi, Jim Robbins
Edition: 1
Finished Date:
Rating: 5
Language: English
Genres: Neuroscience
Level: Entry
Publishers: Trumpeter
Publication Date: 2008-12-16
ISBN: 978-1590306123
Format: ePub
Pages: 208
Download: ePub

brain-wave freqencies

  • delta: 0.5-4 hertz slowest during sleep
  • theta: 4-8 hertz twilight consciousness between feeling deeply relaxed or daydreaming and falling asleep
  • alpha: 8-12 hertz relaxed states but still alert
  • beta 13-50 hertz carry out most tasks

    • low beta 13-15 hertz : relaxed but interested attention

      example: take a test and know the material well

    • mid-range beta 16-22 hertz: focused, external attention

      narrow focus

    • high beta >=22 hertz: tense muscles, anger, anxiety, other intense emotions

      frequencies around 40 Hz are abserved in long-term meditatorsf.

narrow-objective attention: focus on one or a few important things as the foreground, and dismissing all ohter stimuli, making everything else the background

Narrow-objective focus is an emergency mode of paying attention that quickly and substantially increases the frequency of the brain’s electrical activity and raises other aspects of physiological arousal, such as heart and respiratory rates, which in turn directly affect our perception, emotions, and behavior. While narrow-objective focus allows us to perform some tasks very well, it is also physiologically and psychologically expensive because chronic use results in the accumulation of stress. It takes a great deal of energy to perpetually maintain this type of attention, even though we usually aren’t aware of it. In narrow focus the central nervous system is more inherently unstable and more highly reactive than other modes of attention.

Parents or teacher really mean that you werent’t paying narrow enough attention to them or to what they felt was important. Hence, there’s a lot of pressure to adopt narrow-objective attention most of the time.

  • Pay attention to your homework
  • Pay attention to the teacher
  • Stop daydreaming
  • Concentrate
  • Watch where you are going
  • Be careful
  • Look out for cars
  • Keep your eye on the road