In speech therapy we might learn "Acceptance". This can be very effective.. but how does it work exactly in regards to dopamine? I would like to know your thoughts about this. Everyone has their own take on it. Here is my take on it: (let me know how you see this) Tonic dopamine can make **people who stutter (PWS)** more error-prone or hyper-sensitive, which increases the tendency to experience "tripping-over-words" type of stuttering-like disfluencies. Tonic dopamine is likely more associated with consistent, mild speech errors (I think), whereas phasic dopamine is more tied to inconsistent execution difficulties, such as blocks triggered by cues or stimuli. # Prediction error processing: The way I understood it is, when encountering a feared word (like saying our own name), phasic dopamine encodes prediction errors - the mismatch between what we expect to happen and what actually happens. Anticipating a stutter can lead to abnormal phasic dopamine release, which inhibits the release of the speech plan. But strictly speaking, I believe it’s not just the perception that our speech contains errors that drives the execution threshold up. Instead, it’s the perception that we need to speak better (e.g., clearer, louder, more precisely) that raises the threshold (high expectation: the attempt to avoid the perceived error). It’s about whether we feel what comes out of our mouth is "good enough" to get the response we want from the listener. Or whether we anticipate that what we’re about to say won’t be good enough. This perception then creates a feeling that we *need* to speak better, which contributes to the difficulty in releasing the speech plan, as I understand it. # Desensitization: Acceptance Desensitization techniques used in speech therapy, think pseudo-stuttering, advertising, or acceptance.. they may help reduce this perceived need to avoid perceived errors. By doing so, we lower the execution threshold more consistently and normalize phasic dopamine release.. making it more adaptive. This then reduces the likelihood of blocks. Acceptance therapy, for example, helps reduce anticipatory anxiety by reframing stuttering as a neutral or manageable event. Let’s say PWS practice advertising (introducing their stuttering disorder to others to reduce fear). The primary effect of this is likely on the **immediate emotional responses to triggers**, which are mainly governed by phasic dopamine, not so much tonic dopamine. At least, that’s how I understand it. **Substituting words** If we encounter a feared word and use word-substitution to resolve the perceived error, we might successfully execute the new speech plan (i.e., the substituted word). I believe this process is also governed by phasic dopamine rather than tonic dopamine because phasic dopamine handles the rapid, moment-to-moment adjustments. Tonic dopamine, in contrast, operates too slowly to directly influence these immediate dynamics. I think tonic dopamine reflects an underlying predisposition rather than a dynamic response to specific triggers. While acceptance doesn’t directly alter the tonic dopaminergic baseline, it can influence how that baseline predisposition interacts with moment-to-moment regulation of speech execution. # Acceptance affects dopamine We need to understand that acceptance primarily works through the cognitive-emotional loop, which directly governs phasic dopamine responses to speech triggers. For example, reducing the fear associated with a specific word changes how phasic dopamine modulates execution thresholds during speech. In the context of prediction errors, acceptance modifies how we perceive or interpret those triggers. This reduces their salience, whether it’s value-driven salience (e.g., importance placed on speaking fluently) or emergent situational salience (e.g., stress from the environment). # Conclusion So, I believe that acceptance focuses on altering our perception of the error in response to a stimulus or cue, which aligns more closely with phasic dopamine activity rather than the slower, baseline-regulating tonic dopamine. I think acceptance minimizes the prediction error we perceive, normalizing phasic dopamine release and improving the moment-to-moment control of speech execution. **Your thoughts? I’d genuinely love to hear your perspective and any insights you’re willing to share**