Grief disrupts brain systems that map memory onto action, leading to a remapping of the nervous system's ability to create action and interaction with a lost person.

“the brain systems that map memory onto action are disrupted in grief such that you know you wake up each day and you want to go see the person or call them and so it's a what grief really represents is a remapping of your understanding about what you can do with your physical body to create action and interaction with this person that's now gone and so that the remapping is one of the the nervous system having to do all this no-go we talk in terms of in action systems and the basil gangly of the brain it's you have go go programs and no-go programs there's some other stuff too but it's mostly go or noo and basically grief is this taking of a depending on how long and How Deeply you knew the person a tremendous amount of neural real estate and algorithms that were all go you could text them you could call them you could hug them you could kiss them you could listen to them you could smell them and now it's all noo and that we think is what we experience as as grief”