People who enjoy ASMR have heightened sensory sensitivity, a new study reports. Many people who react positively to ASMR also experience higher levels of bodily awareness, greater sensitivity to bodily sensations, and often are easily overstimulated by their environment.
Traumatic brain injury caused five times as many neurons in the amygdala to be active during white noise exposure in rats. Altered sensory processing within subcortical sensory-emotional networks following TBI impacts the facilitation of traumatic memory and may contribute to the development of PTSD.
In people with PTSD, the brain expresses an enhanced response to deviant tones, suggesting their brains over process any environmental changes. Additionally, researchers note, the more enhanced the response, the worse those with PTSD performed on cognitive and memory tests.