#bottom up processing

i am 42 years old with a.d.d. and recently been told i have bottom up processing neurodivergent. does this make sense?

2 minutes ago

Yes, it makes complete sense. In 2026, research increasingly describes both 

ADHD and Autism through the lens of bottom-up processing. This term explains why your brain may prioritize raw data and sensory details over pre-set expectations or "the big picture". 

What Bottom-Up Processing Means for You

Data-First Approach: You likely process every detail—sights, sounds, and facts—as they arrive, building a conclusion from the ground up. In contrast, "top-down" processors use past experiences to quickly filter out what they think is unimportant.

Reduced Filtering: For someone with ADHD, the brain's "automatic filter" is often less active. You might notice the hum of a refrigerator or a subtle change in someone's tone that others completely miss because your brain treats all incoming data as equally important.

Hyper-Awareness and Distraction: Because you aren't filtering "irrelevant" stimuli, you can become easily overwhelmed by sensory input. However, this same trait often leads to superior pattern recognition and innovative problem-solving.

"Doing Before Thinking": In ADHD specifically, bottom-up processing can manifest as responding to immediate ideas or stimuli without first mapping out a long-term plan (action-first dynamics). 

Why This Matters at 42

AI Overview

Bottom-up processing in neurodivergent individuals, particularly those with autism, means starting with detailed sensory input and building to a bigger picture, unlike neurotypical "top-down" processing (big picture first). This style leads to noticing subtle details (like typos or sounds) but can cause sensory overload or difficulty grasping abstract concepts without concrete data, though it also fosters innovation by connecting details uniquely, often requiring therapies that address the body's sensory needs first. 

Key Characteristics & Examples

Detail-Oriented: Noticing a misplaced object, a slight change in tone, or a typo before recognizing the whole scene or context.

Sensory Focus: Processing raw sensory data (lights, sounds, textures) intensely, which can be overwhelming but also insightful.

Literal Interpretation: Processing language and situations very literally, as details must align before a concept forms.

Jigsaw Puzzle Analogy: Building understanding piece by piece (bottom-up) rather than seeing the box cover and filling in (top-down). 

How It Affects Neurodivergent People (e.g., Autism, ADHD)

Strengths: Excellent at spotting errors, discovering unexpected problems, deep focus on specific tasks, unique problem-solving, and noticing patterns others miss.

Challenges: Difficulty filtering irrelevant stimuli, potential sensory overload, struggling with abstract ideas until enough concrete examples are gathered, and slower integration of details into a coherent whole. 

Working with Bottom-Up Processing

Therapeutic Approaches: Somatic (body-focused) therapies, mindfulness, and trauma-informed care are effective, as they start with physical sensations and safety, bypassing potential verbal/cognitive blocks.

Practical Strategies: Reducing sensory input (headphones, quiet spaces), using visual schedules, and breaking down abstract tasks into concrete steps. 

In neurodivergent contexts, particularly within the Autistic and ADHD communities, bottom-up processing is a cognitive style where the brain prioritizes raw sensory data and specific details before constructing a "big picture" or general concept. 

Core Mechanism

Data-Driven: Information is gathered through the senses—from the smallest pieces upward—rather than being filtered through pre-existing expectations or schemas.

Neurological Basis: Research indicates that autistic brains often show greater bottom-up signaling (sensory input) compared to the top-down (predictive) flow found in neurotypical brains.

Filter Sensitivity: While neurotypical brains "top-down" filter out irrelevant stimuli (like a ticking clock), neurodivergent brains may process all incoming data with equal significance, often leading to sensory overwhelm. 

Manifestations by Neurotype

Autism: Often involves a "puzzle-piece" approach to learning. An individual may need to understand every detail of a system (e.g., how every part of a machine works) before they can grasp its overall purpose.

ADHD: Can manifest as "bottom-up doing," where the brain responds to immediate, high-dopamine stimuli or novel details without first mapping out a long-term plan. 

Strengths and ChallengesFeature Impact of Bottom-Up ProcessingStrengthsExceptional pattern recognition, high accuracy, "outside-the-box" creative problem solving, and intense attention to detail.ChallengesSlower processing speed (due to high data volume), difficulty with vague instructions, and high susceptibility to sensory overload or burnout.

Accommodations for Bottom-Up Thinkers

Be Specific: Provide concrete, step-by-step instructions rather than broad "big picture" goals.

Allow Processing Time: Use the "10-second rule"—give at least 10 seconds of silence after a prompt to allow the individual to synthesize details into a response.

Use Visuals: Support abstract concepts with tangible, visual examples or diagrams to help link details to meaning.

Continuing to work with anger and disappointment, and internal family systems work. Today we spent time with my 8 yo disappointed, isolated, frustrated self and goddamn, every version of me is so fucking sassy. 8 yo me is low key horrified of where I have ended up, that I'm nowhere near her Ideal Adult Life, which was pretty fucking freeform/impractical. I tried to do some of the reintegration work and am trying to tell myself that I can look out for her and hear her concerns and she just looks at me and says something like "yeah, clearly you're taking great care of yourself currently"

And like, bitch I know. I know I am not doing the maintenance work I need to do. I'm trying.

And then my therapist said "It sounds like your critic is coming out a bit there" . I don't know if you're familiar with the inner coach vs inner critic pediatric therapy bit, but this is something we use with the kids all the time. I fucking hate it when my kids tell me "mama, it sounds like you're listening to the critic and not the coach". Just about as much as they hate it. I mean, they're not wrong. I am so good at listing every single way I am failing. I get that this is something I seem to think is useful and that it's been a strategy to help keep me working on progress, but it is hard to be grateful about always hearing everything I've ever done wrong.

> > Here’s a little thought experiment about free will. Let’s say that > > there exists a technology which will allow us to completely control > > another person’s neurology. What if two people use this technology to > > control each other? If one person started before the other, then they > > could effectively ‘disarm’ the others control over them preemptively, > > but what if they both began at the exact same time? Would one ‘win’ > > control over the other somehow? Would either of them even be able to > > try to win? How would they know if they were controlling the other or > > being controlled to think they are controlling the other? > > Complete control over anything is simply impossible. Control is just a > feeling and not fundamental. It depends what you mean by complete control. If I choose to hit the letter m on my keyboard, am I not controlling the keyboard to the extent that it is controllable? > The closest one can get to controlling the brain is to make it > dysfunctional. It's a bit boring, but the most realistic answer is that both > would fall unconscious, as that is the only result of exerting excessive > control over a brain. > It's the same result as if you try to totally control an ecosystem, or an > economy. It'll destroy the natural order, as control is not a fundamental > ordering principle. I generally agree. The thought experiment is to make people consider the fallacy of exclusively bottom up processing. I don't think that you could actually control a brain, I'm just saying that if you could, how do you get around the fact that it violates the assumption that only neurons can control the brain. If my neurons control a machine that control another person's neurons, then what happens? How does either the master or slave know if they are controlling or being controlled? The point was to show that bottom up exclusivity fails, and that  we must consider that our ordinary intuition of bi-directional, high-low processing interdependence may indeed be valid. > > It seems like you think of control or will as something fundamental, and I > don't see any reason to assume that it is. That's a reasonable objection. If it's not fundamental, what is it composed of, and why is there an appearance of anything other than whatever that is? >Honestly I that we think that we > have "free", independent will is just the arrogance of our ego that feels it > has to have a fundamentally special place in the universe. I used to think that too, but now I see that it's every bit as much of an egotistical arrogance to De-anthropomorphize ourselves. It's an inverted, passive aggressive egotism to perpetually look to other processes above and below our native level of individual cohesion to give credit or blame, while all the while hiding invisibly behind the voyeur's curtain.