The Grieving Brain: The Surprising Science of How We Learn from Love and Loss

by Mary-Frances O'Connor

Grieving requires the difficult task of throwing out the map we have used to navigate our lives together and transforming our relationship with this person who has died. Grieving, or learning to live a meaningful life without our loved one, is ultimately a type of learning. Because learning is something we do our whole lives, seeing grieving as a type of learning may make it feel more familiar and understandable and give us the patience to allow this remarkable process to unfold.

grief never ends, and it is a natural response to loss. You will experience pangs of grief over this specific person forever. You will have discrete moments that overwhelm you, even years after the death when you have restored your life to a meaningful, fulfilling experience. But, whereas you will feel the universally human emotion of grief forever, your grieving, your adaptation, changes the experience over time.

Grief is a heart-wrenchingly painful problem for the brain to solve, and grieving necessitates learning to live in the world with the absence of someone you love deeply, who is ingrained in your understanding of the world. This means that for the brain, your loved one is simultaneously gone and also everlasting, and you are walking through two worlds at the same time. You are navigating your life despite the fact that they have been stolen from you, a premise that makes no sense, and that is both confusing and upsetting.

If someone close to us dies, then, based on what we know about object-trace cells, our neurons still fire every time we expect our loved one to be in the room. And this neural trace persists until we can learn that our loved one is never going to be in our physical world again. We must update our virtual maps, creating a revised cartography of our new lives. Is it any wonder that it takes many weeks and months of grief and new experiences to learn our way around again?

A key problem in grief is that there is a mismatch between the virtual map we always use to find our loved ones, and the reality, after they die, that they can no longer be found in the dimensions of space and time. The unlikely situation that they are not on the map at all, the alarm and confusion that this causes, is one reason grief overwhelms us.

This confusion is not the same as simple denial, although that may be how others describe it. Instead it is the utter disorientation people experience in acute grief.

When you wake up one morning and your loved one is not in the bed next to you, the idea that she has died is simply not true in terms of probability. For our brain, this is not true on day one, or day two, or for many days after her death. We need enough new lived experiences for our brain to develop new predictions, and that takes time.

Grief emerges as distress, caused by the absence of a specific person who filled one’s attachment needs and therefore was part of one’s identity and way of functioning in the world.

C. S. Lewis writes, “I not only live each endless day in grief, but live each day thinking about living each day in grief.”

That is because the love between two people, that unmistakable but usually indescribable property, occurs between two people. Once we have known love, we can bring it into our awareness, we can feel it emerge and emanate from us. This experience reaches beyond the love for the flesh and bones of the person we once knew on this earthly plane. Now loving is an attribute of us, regardless of who we share it with, regardless of what is given to us in return. This is a transcendent experience, a felt sense of being loving without needing anything in return.

Because the brain is designed for learning, thinking about grief from the perspective of the brain can help us understand why and how grief happens.