flâneur

Yunjie Zhang

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on the atlas — 36

highlights — 21

  • The deepest issue is that the brain is running a prediction model whose goal is maximum social approval — and treating any deviation from that as a body budget loss. This is an exhausting and impossible target.
    How emotions are constructed in the
  • your brain has built a highly sensitive, hair-trigger predictive model around social evaluation. Probably from repeated experiences where social approval or disapproval had significant consequences. The model is over-fitted — it learned from real data, but it now fires in situations where the actual stakes are much lower.
    How emotions are constructed in the
  • Your brain treats social belonging as a body budget necessity, not a luxury. Evolutionarily, being rejected from the group meant death — no food, no shelter, no protection. So the brain wired social acceptance as deeply into its threat-detection system as physical danger. Being disliked literally triggers similar neural machinery as physical pain.
    How emotions are constructed in the
  • the body state itself changes what context feels relevant. Because your muscles are already tense and your heart is already up, your brain is more likely to interpret an ambiguous sound as threatening — the body state is biasing the context-reading. The interoceptive signal is shaping the prediction, which is shaping how context gets read, which is shaping the emotion, which is feeding back into the body.
    How emotions are constructed in the
  • the body preparation is the undifferentiated fuel load. The emotion concept is the label on the container that tells you what the fuel is for. The fuel itself looks the same either way.
    How emotions are constructed in the
  • Your brain is always running ahead of the present moment. It doesn't wait for complete sensory information before acting — that would be too slow. Instead, it uses everything it knows (context, past experience, what you're about to do) to pre-emptively prepare the body.
    How emotions are constructed in the
  • Why some things feel more pleasant than others comes down to a mix of: Evolutionary priors — sweetness signals calories, bitterness signals potential poison, warmth signals safety. These create weak baseline valence tendencies. Learning and prediction — most of valence is shaped by what your brain has learned to predict from a stimulus. Things associated with past reward feel good; things associated with past harm feel bad. Current body state — the same food tastes better when you're hungry. The same social interaction feels more draining when you're depleted. Your current body budget changes …
    How emotions are constructed in the
  • The concept "fear," for example, is a statistical summary of all the times you've experienced something called fear: what situations triggered it, what your body did, what happened next, what others called it.
    How emotions are constructed in the
  • Your brain is constantly generating predictions about what's causing the sensations in your body and the world, and it only updates those predictions when something unexpected happens.
    How emotions are constructed in the
  • Things can feel comfortable because they're genuinely good for you, or because they're familiar and your brain has learned to predict them as low-cost — even when they're actually keeping you stuck.
    Phenomenology
  • Valence — the pleasant/unpleasant dimension — is the brain's way of signaling whether your current body budget is in surplus or deficit, and whether the situation calls for approach or avoidance. Pleasant feelings are generally the brain's signal that things are going well metabolically and situationally — energy is available, needs are being met, the environment is safe or rewarding. The brain is saying: more of this, stay here, keep going. Unpleasant feelings signal the opposite — something needs attention, a cost is being paid, a need is unmet, something requires action or avoidance
    Phenomenology
  • Emotions are compressed summaries that tell you, quickly, what kind of situation you're in and what kind of action it calls for. Fear says: something threatening, move away or freeze. Anger says: something is blocking what you need, push back. Curiosity says: something novel and potentially useful, move toward and explore. They're not descriptions of reality — they're action recommendations, delivered as feelings.
    Phenomenology
  • there are the inputs that feed into that prediction: sleep (poor sleep raises baseline arousal and makes the brain more threat-sensitive), blood glucose (low blood sugar genuinely increases irritability and anxiety construction), chronic stress (keeps the sympathetic system partially activated as a baseline), movement or lack of it, and — crucially — your interoceptive sensitivity, meaning how clearly you can read your body's signals at all.
    Phenomenology
  • your brain is constantly running a body budget. It's predicting your metabolic needs before you need them — speeding the heart up slightly before you stand, releasing cortisol before a stressful event it anticipates. This means your body state is often already shaped by predictions about what's coming, not just reactions to what's happening.
    Phenomenology
  • If you don't have a concept for something, Barrett's research suggests you're less likely to construct that emotion clearly — the interoceptive signal will remain a vague, undifferentiated feeling.
    Phenomenology
  • two people in the same physiological state — same racing heart, same chest tightness — can construct completely different emotions depending on their concept library and their reading of context.
    Phenomenology
  • The brain takes those raw interoceptive signals and asks, in effect: what is the most plausible explanation for why my body feels like this right now? It answers by drawing on three things simultaneously: the interoceptive signal itself, the current context (who am I with, what just happened, where am I), and a learned library of emotion concepts — categories you've been building since childhood by watching how people around you named and responded to bodily states.
    Phenomenology
  • The brain is running a continuous internal model of the body's state, updating it from signals flowing up from the viscera — that's interoception. These interoceptive signals arrive as raw, undifferentiated data. A racing heart, tightness in the chest, heat in the face — these don't come pre-labeled. They arrive as what Barrett calls "affect": a simple two-dimensional space of valence (pleasant/unpleasant) and arousal (high/low energy). That's all the body gives you directly.
    Phenomenology
  • emotions aren't discrete programs that "fire"; they're the brain's constructions, built from interoceptive signals plus context plus learned concepts. You don't detect sadness — you construct it, using your body's physiological state as raw material.
    Phenomenology
  • First-generation phenomenology (Husserl) was mostly about the structure of experience — how consciousness is always directed at something, how time feels from inside, how perception works.
    Phenomenology
  • What you perceive is not the world directly — it's your brain's best guess about what's causing your sensory data.
    Phenomenology