Mom Brain Is Only Half the Story: The Amazing Parts of Matrescence
What happens in the brain and the self during the transition to motherhood, according to the researchers who actually asked
There is an evening, usually somewhere in the first year, when you stand in your own kitchen and cannot retrieve the word for the thing you drain pasta in. You are holding it. You are looking directly at it. Your brain offers you nothing.
That same week, you stood on the sidewalk for a full minute because the baby had locked onto a puddle and would not be moved, and at some point you realized you were looking at the puddle too, and that it was actually sort of interesting. The whole sky was sitting upside down in it, on a stretch of pavement you have walked over four hundred times without once looking down.
“…and at some point you realized you were looking at the puddle too, and that it was actually sort of interesting. The whole sky was sitting upside down in it, on a stretch of pavement you have walked over four hundred times without once looking down.”
Both of those are your brain in matrescence. The forgetting has an entire cultural conversation built around it. The noticing has almost none, and the research on the noticing is far more interesting than anyone has bothered to tell you.
Adolescence, The Sequel
There is a serious case in the literature for treating motherhood the way we treat childhood, adolescence, and aging, as a developmental stage with its own neurological and cognitive signature, worth studying on its own terms (Orchard et al., 2023). The comparison to adolescence holds up in more than one direction. Both are periods when a person's social role reorganizes underneath her, adolescence moving her from dependence toward independence and matrescence moving her into supporting dependents of her own. Both are sensitive periods, meaning the brain is primed to take on new skills and knowledge from experience.
Nobody tells a fifteen year old that a scattered semester is a permanent personality change. We understand that she is in the middle of something, and that the disorientation is the shape of the process rather than evidence against her. You are also in the middle of something, and it turns out to have a name.
The Load Is the Curriculum
Consider what it takes to leave the house with an infant. You are holding a running inventory in your head, a favorite toy, a change of clothes, a bottle, while reorganizing the entire plan around nap timing and feeding windows that shift without notice (Orchard et al., 2023). None of that replaced your previous responsibilities. It is stacked on top of them.
Then the child changes. What worked for a fully dependent newborn is useless for a mobile toddler, and useless again for a seven year old, and the strategies you painstakingly built for one child may not transfer to the next one at all. There is no version of this where you finally master the system, because the system gets replaced roughly every eighteen months and you rebuild it every single time. You have been doing that continuously, without ever once being told it counts as a skill.
Your Actual Life Is an Enriched Environment
Look at how the hay is hung.
The elephants in this photograph are being fed, and the keepers could have put the hay on the ground in a pile. Instead it is bundled into nets and winched up a pole on a pulley system, high enough that an elephant has to plant herself, judge the distance, stretch her trunk to full extension, and work at the net until it gives. The waterfall is there on purpose. The branches scattered across the sand are there on purpose. Nothing in that enclosure is arranged for the convenience of the animal living in it.
This is called enrichment, and it is standard practice at any decent zoo, because an animal that gets its food handed to it in a trough declines. An animal that has to solve for its food stays sharp. The hay twelve feet in the air is the same hay. The only thing that changed is everything she has to do to reach it.
Yes, I hear how this sounds, and nobody wants to be told she is the elephant. Leave the enclosure out of it and take the pulley, because the pulley is the entire point.
In the animal literature, an enriched environment is one built deliberately for complexity and novelty, and it is understood to be good for the brain. The proposal Orchard et al. (2023) put forward is that the human caregiving environment may work the same way, because parenting supplies an enormous and relentless amount of both.
Nothing about your Tuesday is arranged for your convenience either. The nap that moves without warning, the shoe that has gone missing on the way out the door, the pediatrician who calls back during the twenty minutes you had set aside for yourself, the toddler who has decided this week that the food cannot touch. You are constantly reaching, judging distance, working at the problem until it gives, and then doing it again tomorrow with a problem that has changed shape overnight.
The mental load that feels like an occupational hazard on a Tuesday afternoon is, in this framework, the kind of cognitive stimulation that researchers construct on purpose.
Nobody built your day on a pulley system to keep you sharp. It may be doing it anyway.
What the Mental Load Might Be Building
The framework goes somewhere genuinely hopeful from there. Cognitive reserve is the brain's capacity to keep functioning in the face of damage, illness, or decline, and it is understood to be built by exposure to challenge and complexity over a long stretch of time. Sounds like motherhood, right? Orchard et al. (2023) suggest that the increased cognitive load of early motherhood presents an initial challenge, and that when those demands are sustained across decades, they may result in increased cognitive reserve in later life.
Their reasoning runs parallel to what is already understood about complex work. If the difficulty of a person's job across a lifetime contributes to how sharp she is at seventy, then a role that provides constant novelty, demands a comparable time commitment, and runs for twenty years or more might reasonably do something similar.
The same thing scattering you at thirty four may be part of what protects you at seventy four.
I want to be careful here, and so are they. This is a framework proposed for future investigation rather than a settled finding, and the authors take deliberate care to say that people without children should never be described as having missed a developmental stage. Fair. But it is a real argument, made in a serious journal, and it is the opposite of everything you have been told about what motherhood costs you.
What Twenty Two Mothers Said When Someone Finally Asked
The neuroscience is one half. The other half came from Dr.Aurélie Athan and Dr. Lisa Miller. They sat down with mothers for an hour and a half to two hours each and asked them what had changed.
Twenty two mothers, including adoptive mothers, a single mother through egg and sperm donation, and two men who identified as the mother in their partnership (Athan & Miller, 2013). Six themes came out of it.
They described a love that did not fit any existing category, one mother calling it "a category all to itself." They described a new sense of being connected to other people and to the natural world, in ways that surprised them.
They described their priorities reordering completely, and most of them experienced this as automatic rather than as something they had to force. Worth naming honestly: the participants who found this part most acute and most enduring in its difficulty were also the ones who described perinatal blues and depressive symptoms. The transformation and the suffering were not in separate rooms.
They described compassion widening outward in rings, starting with their own child and reaching family and then strangers. The crying baby on the plane stopped registering as noise. One mother found herself sobbing at a stranger's grief on television, at an intensity that would have been unimaginable to her a year earlier.
They described sensory experience turning vivid, ordinary objects becoming interesting again, and time behaving strangely, sometimes stretching and sometimes collapsing. One mother woke in the hospital knowing her baby needed her, minutes before a nurse brought the baby in.
They described losing interest in money, achievement, and the appearance of having it all handled. And they described a striking comfort with ambiguity, a willingness to sit inside questions they had not answered yet.
“They described compassion widening outward in rings, starting with their own child and reaching family and then strangers.”
Nobody Handed You the Words
Here is the finding that stays with me. Many of these mothers had kept quiet about all of it, or had never examined it in any depth, until someone sat down and asked (Athan & Miller, 2013). In earlier work, the same researchers found mothers describing their experience in intensely spiritual language while not recognizing it as such (Athan & Miller, 2005).
Their explanation is cultural. Because we have built no shared framework for the growth side of motherhood, women often lack any language for what is happening to them. Athan and Miller (2013) argue that the distance between the expectations of motherhood and its reality is a humbling experience that may function as a kind of initiation, and that this disillusionment may be the exact window where either psychological distress or genuine growth emerges.
Which one it becomes depends enormously on whether anyone is standing there with you, naming it.
The Honest Part
Athan and Miller (2013) note that their sample was small and homogeneous, largely white, educated, higher income women in and around one major city, and they explicitly decline to claim their participants speak for all mothers. Orchard et al. (2023) note that the middle years of motherhood are almost entirely missing from the research, and that their framework is an invitation for future study rather than a conclusion.
So none of this is a promise. It is a possibility with real evidence behind it, which is considerably more than most mothers are ever handed.
Both Things Are True
You can be undone by this and expanded by it in the same afternoon. You can lose the word for colander and gain a true appreciation for a puddle again like you did when you were three. The exhaustion is real and the transformation is also real, and the research does not ask you to choose between them.
Athan and Miller (2013) ended their study by asking clinicians to take this seriously, so that women are not left interpreting enormous internal change as evidence that something is wrong with them. That is the work we are doing here at Overture Therapy. Not talking anyone out of how hard it is, and also refusing to let the hard part be the only thing anyone ever tells you.
Six Questions Nobody Asks Mothers
Remember that the mothers in that study had been carrying all of this without examining it, in some cases for years, until a researcher sat down and asked them directly (Athan & Miller, 2013). Nobody had asked. That is the entire reason it stayed unexamined.
So here are the questions. Give yourself five minutes and a voice memo, or the back of an envelope, or a friend on the phone.
What does the love actually feel like from the inside? Skip whether it is big. Everyone knows it is big. What kind of thing is it, in your body, on an ordinary Wednesday.
What did you put down when you became a mother that you are honestly relieved to be rid of? There is usually at least one thing, and most mothers feel they are not allowed to say so.
Who do you have patience for now that you had none for before? A stranger, a coworker, one of your parents, the version of yourself who was twenty three.
What have you looked at recently only because your child looked at it first? Down to the object. The puddle, the crack in the sidewalk, the dog across the street, the moon at four in the afternoon.
What used to matter to you that has stopped mattering? And be honest about whether you miss it or whether you are glad it is gone.
What question have you started asking that you had not thought about since you were a child? About death, or luck, or why anything exists at all. Most mothers in that study found these questions waiting for them and had nowhere to put them.
And one more, because it holds both halves of this together at once.
What is the hardest thing about this that you would still not undo?
You do not need good answers. Having any language at all for what is happening to you is the whole benefit, and the research suggests that most mothers are handed none.
Frequently Asked Questions About Mom Brain and Matrescence
Is mom brain real?
Yes, and the forgetting is the part everyone talks about. Researchers describe motherhood as a developmental stage with its own cognitive signature, comparable to adolescence in how thoroughly it reorganizes a person (Orchard et al., 2023). The word-finding trouble is real. So is the sharpened attention that comes with it.
What is matrescence?
Matrescence is the transition into motherhood, covering the neurological, psychological, and identity changes that come with it. Mothers in one study described love that fit no existing category, priorities reordering on their own, compassion widening outward, and sensory experience turning vivid (Athan & Miller, 2013). Most of them had no language for any of it.
How long does mom brain last?
Longer than the newborn stage, and the research does not offer a tidy endpoint. The cognitive demands of caregiving continue for decades as the child changes and the strategies have to be rebuilt. Orchard et al. (2023) propose that sustained load may contribute to cognitive reserve in later life.
Does matrescence happen to adoptive and non-birthing parents?
The Athan and Miller (2013) sample included adoptive mothers, a single mother through egg and sperm donation, and two men who identified as the mother in their partnership. The themes came through across all of them, which suggests the transformation is not limited to pregnancy and birth.
Overture Therapy supports the woman behind the mother. If you're navigating overstimulation, anxiety, or burnout in motherhood, reaching out is a place to start.
Maya Kruger, MA, LCAT, LPC, RDT, PMH-C, CTT3
Licensed psychotherapist · Founder, Overture Therapy · Maternal mental health specialist
References
Athan, A. M., & Miller, L. (2005). Spiritual awakening through the motherhood journey. Journal of the Association for Research on Mothering, 7(1), 17–31.
Athan, A. M., & Miller, L. (2013). Motherhood as opportunity to learn spiritual values: Experiences and insights of new mothers. Journal of Prenatal and Perinatal Psychology and Health, 27(4), 220–253.
Orchard, E. R., Rutherford, H. J. V., Holmes, A. J., & Jamadar, S. D. (2023). Matrescence: Lifetime impact of motherhood on cognition and the brain. Trends in Cognitive Sciences, 27(3), 302–316. https://doi.org/10.1016/j.tics.2022.12.002