When most people make errors, they are willing to learn from their mistakes. Those with narcissistic personality traits fail to acknowledge when they make mistakes and are thus unable to learn from errors they have made.
A study of macaque monkeys reveals low-intensity ultrasound can both generate and suppress signalling in the brain and modulate normal function. The ultrasonic stimulation alters counterfactual thinking, allowing the ability to decide upon a better alternative in decision-making tasks.
