STUTTER diagram: Amygdala can result in stuttering

STUTTER diagram: Amygdala can result in stuttering What is your viewpoint on this STUTTER image? \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Please provide your opinion on the below text: In my opinion: Anticipatory fear, like fear about saying your own name BEFORE STUTTERING, can activate the amygdala producing an affective signal that biases motor movement decisions by the basal ganglia. This projects into the basal ganglia because the basal ganglia act as a gatekeeper for initiating speech motor execution, and can shift basal-ganglia output toward inhibition — effectively preventing the release of the planned speech plan (regarding WHAT and HOW we plan to say the word/sound). Trigger mechanism of the Amygdala: Affective appraisal: A socially salient threat (e.g., saying your own name in front of others) is appraised as aversive. The amygdala and extended limbic network encode the emotional valence and assign threat value, producing rapid affective signals and recruiting the hypothalamus/brainstem for autonomic arousal. Prefrontal regions (including anterior cingulate cortex and orbitofrontal cortex) and insula increase attention to interoceptive and performance signals. The speaker’s expectation that saying the word will be difficult further activates compensatory monitoring and safety strategies, which bias planning processes toward cautious control rather than automatic execution (i.e., over regulating the execution of the speech plan to say the word/sound) Signals reach the basal ganglia via ventral striatum/nucleus accumbens and through dopaminergic pathways (VTA/SNc). In the inhibited state, the globus pallidus interna (GPi) sends stronger inhibitory output to the thalamus. Gating failure of motor release: The basal ganglia normally “gate” the release of a prepared motor program (the speech plan) by disinhibiting thalamocortical drive to supplementary motor area (SMA) and primary motor cortex (M1). Excess inhibitory output prevents that disinhibition, so the motor plan is not fully released to descending motor pathways — the system effectively prevents execution. Execution attempt & freezing/block: Then, if the speaker attempts to speak anyway during this inhibited state in the basal ganglia, to execute the speech plan (activation of premotor/SMA → M1 → corticobulbar nuclei), the basal-ganglia–thalamocortical loop’s inhibition delays initiation. Outward manifestations appear as stuttering. Consequences: Sensitization to fear or other stimuli can then further reinforce this stutter cycle or loop (i.e., stimulus generalization). The consequences of stuttering then produces a salient error signal (and often social feedback), which strengthens amygdala activation and anticipatory monitoring on subsequent trials — creating a negative feedback loop (fear → basal-ganglia mediated inhibition → failed execution → increased fear) that helps maintain and reinforce stuttering behavior (i.e., stimulus generalization). Failed interventions: Often, safety and coping strategies that work at first stop working eventually. Sometimes they can bypass the basal-ganglia gating, but eventually safety strategies might stop working. If this happens, then the "random" desensitization strategies that stutterers often use are not very effective at successfully desensitizing to our unique stutter cycle (i.e., we need to find more effective strategies to address our unique approach–avoidance conflict mediated by the basal ganglia). Failed interventions can then result in even lower-threat stimuli starting to increase the precision weighting of error signals from sensory feedback and other feedback/stimuli. This explains how the Amygdala (i.e., the approach–avoidance conflict) still triggers the gatekeeping basal ganglia's inhibition state, even during moments when we do not consciously notice any anticipatory fear. The subconscious BRAIN perceives certain stimuli as a threat (or problem) to be avoided, triggering the inhibited state and resulting in stuttering-like disfluencies - even when we are not consciously aware of the anticipatory fear (for example, when we do not stutter alone, but when switching to a social situation stuttering occurs without necessarily noticing any anticipatory fear, yet the basal ganglia gatekeeping to an inhibition state, did respond to an approach-avoidance conflict). **Your thoughts?** This is just my own take on it. https://preview.redd.it/k6qnw7i7t6rf1.jpg?width=1200&format=pjpg&auto=webp&s=feb7f0ed1a87057fcf037b4b839f773d4aef09a1 Switching from speaking alone to speaking with a person - even if we are **comfortable** speaking with a person, it can still result in stuttering. Because the subconscious brain is still reacting to an approach-avoidance conflict subconsciously that we are simply not aware of at the moment of execution. Your thoughts? https://preview.redd.it/jscai9qot6rf1.jpg?width=1024&format=pjpg&auto=webp&s=6111713dcfc609799e4c8ca118995d7d97633a47