Why is it that this sound is aversive enough to elicit a physical response ?
为什么这种声音会令人厌恶到产生身体反应?
Mixing the aversive with the appetitive sends conflicting information to the brain , and confusion is what the senses are trying to avoid as they supply you with useful , lifesaving information .
Among the five tastes , salty , sweet and umami ( meaty or savory ) are appetitive , driving us toward essential nutrients , whereas bitter and sour are aversive , alerting us to potentially harmful substances .
This is where understanding how the brain creates the sensation of food with multiple senses contributing means that a therapist could begin to assess which sensory system is affecting how a child feels about an aversive food .