How does brain training work?
Brain training is analogous to strength and speed training.
High intensity training stresses a system which responds and becomes positively or negatively enhanced due to inherent plasticity or ability to change in a positive or negative direction.
For example weight lifting responds to the overload principle. If the one rep maximum is 100 lbs then one lifts 70% or 70 lbs 8-10 repetitions. During recovery the muscle becomes larger, stronger and mitochondria increase in volume and mass. To continue to gain strength, size and performance one must keep the intensity, load, reps and recovery in the zone. One trains generally to failure to repeat a repetition. One can also negatively un-train with bedrest and degrade potential strength.
In brain training one performs a task of attention, audition or vision on two or more comparator events and is tested on the accuracy of the task. The time allowed to perform, perceive the task is shortened or the presence of interference is introduced to make the task more difficult (or heavier) for each repetition. Unlike the muscle, brain failure is not digital but analog meaning the evidence of failure is incorrect perception. The proper intensity to gain brain speed and accuracy is a failure rate of 20-30 % or a success rate of 70-80 %. Therefore the training zone of 70-80 % capability appears to be optimum. Twenty minutes is a recurring duration in published reports of various empirically successful brain training regimens.
Who will brain training optimize?
Humans are born helpless and are self learning in a caring family and community. They are subject to negative and positive brain plasticity changes. Development is generally asynchronous with regard to gross motor, fine motor, communication, social and problem solving which comes together around the age of 2 and becomes synchronized or aligned for further hypothesis, testing, learning and re-hypothesizing.
At some point one notices that children are learning at different rates. WHY?
After peak development at 25-30 years of age, the individual is optimized by complete development of the adult brain and the adult body.
At some point one notices that older adults are slowing down mentally from their highest point. WHY 2?
Way down the road one notices that the elder is repeating questions and lacking confidence in decision making. WHY 3?
At every step along the way, various individuals in the group drastically slow down mentally or emotionally below the average of their peer age group. WHY 4?
WHY 1. Children who can master and fluently speak their language have great brain potential which is blocked by slow sensory brain speed processing, superficial processing cognitive strategies and lack of deep distributive practice skills of review and rehearsal. Brain training increases BANDWIDTH. Sensory brain speed and poor cognitive strategies explain learning rate variation.
WHY 2. Young adults lack the skill of exchanging one item in working memory for the next item. This is evidence of slowing down to improve accuracy.
WHY 3. The inability to recall objects after 3-5 minutes is minimal cognitive impairment. This results from slowing auditory and visual processing speeds. Increasing sensory processing speeds greatly improves short term memory. High IQ/BANDWIDTH and highly educated persons of age reveal less brain slowing by compensating.
WHY 4. Traumatic brain injury, emotional brain injury, drug, alcohol, anesthesia, chemotherapy slow down the brain from the optimum.
The Bell Curve (IQ) by Charles Murray can be shifted to a higher mean!
Everyone and every age can be optimized by brain training averaging 135-230 % for speed.