“In an extroverted brain,” the doctor explained, “the thalamus miniaturises incoming sensory data.
That means that in terms of brain stimulation, people seem ‘smaller’, objects seem less large, sounds seem ‘softer’, and lights appear less bright.
This results in reduced stimulation so the extroverted brain not only can take in more stimulation but also craves more stimulation in order to stay awake and alert.”
“That’s Jon’s brain, all right,” said their father with a chuckle.
“In an introverted brain,” said the doctor, “the thalamus magnifies the data so that, in effect, the brain is working with larger-than- life everything.
In terms of brain stimulation, people seem ‘bigger’, objects seem larger, sounds seem ‘louder’, and lights appear ’brighter’. The brain can easily become overwhelmed with the enlarged data.
Consequently, it withdraws from too much stimulation. Introverted brains may like people very much, but prefer to take them in smaller quantities.”
“And that would be me,” said Eric, almost proudly. “It’s a relief and kind of cool to know that I have a unique brain.”
That in itself is a turnaround, the doctor thought to himself. Amazing what a little knowledge can do!