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Neurophysiological teb tshwm sim los ntawmkoob-Kev sib cuam tshuam ntawm daim tawv nqaij hloov zuj zus mus rau peb ntu ntawm lub cev: mechanosensation tam sim ntawd (0–50 ms), kev sib kis sai sai (50–500 ms), thiab tsis tu ncua nociception (tshaj 500 ms). Ib tug mechanoreceptors, nrog conduction velocities ntawm 30-70 m / s, thawj zaug pom compressive stimuli ntawm ib tug ua kom pib ntawm 0.5-1 mN / μm²; Tom qab ntawd, Aδ cov hlab ntsha (5-30 m / s conduction tshaj tawm) kis mob pricking ntawm qhov pib ntawm 2-5 mN / μm²; Thaum kawg, unmyelinated C-fibers (0.5–2 m/s conduction velocity) kho qhov mob kub hnyiab tsis tu ncua nrog rau qhov pib ua kom qis dua tab sis ntev firing ntev. Needle tip geometry modulates activation ratio ntawm peb cov neeg fiber ntau los ntawm kev hloov pauv kev ntxhov siab subsurface faib rau hauv cov ntaub so ntswg.

Raws li cov neuromatrix txoj kev xav ntawm qhov mob, percutaneous koob stimulation concurrently activates thawj somatosensory cortex (S1), anterior cingulate cortex (ACC), thiab insula. Functional magnetic resonance imaging (fMRI) cov ntaub ntawv qhia tau hais tias ib zaug ib zaug -bevel koob ntxig induces 12-15% nce siab hauv cov ntshav oxygenation theem-dependent (BOLD) teeb liab hauv S1 thiab nce 8-10% hauv ACC; optimized tip profiling curtails cortical activations rau 5-8% (S1) thiab 3-5% (ACC). Qhov kev tsis sib xws no tshwm sim los ntawm kev hloov pauv kev ntxhov siab: nce kev txiav- ntug fillet vojvoog los ntawm 5 μm mus rau 20 μm txo qis cov ntaub so ntswg kev ntxhov siab los ntawm 40% thiab txo qis kev sib raug zoo ntawm neural activation los ntawm 30%.

Vibratory analgesia yog mechanistically underpinned los ntawm lub rooj vag tswj txoj kev xav ntawm qhov mob. Microvibration xa mus rau cannula ntawm 100-150 Hz nrog 0.05-0.1 mm amplitude excites A afferents los tsim inhibitory signals uas thaiv ascending nociceptive signaling nyob rau hauv tus txha caj qaum dorsal horn. Cov kev tshawb fawb soj ntsuam tau lees paub qhov Visual Analogue Scale (VAS) qhov mob tau poob qis los ntawm 3.5 ± 1.2 hauv pawg tswj tsis tau kho mus rau 1.8 ± 0.9 hauv pawg kev vibration intervention (p<0.01). The optimal stimulation setting is 120 Hz frequency paired with 0.08 mm amplitude, which elevates pain threshold by 2.1-fold while preserving cannula positional stability (tip displacement <0.02 mm).

Thermal modulation modulates nociception ntawm lub sijhawm hloov pauv cov peev xwm (TRP) ion channels. TRPV1 channels qhib siab tshaj 43℃kom elicit thermal hyperalgesia, whereas TRPM8 pib mob khaub thuas thaum txias hauv qab 25 degree. Precision thermal tswj ntawm koob nyob rau hauv 32-34℃(ib txwm ntawm daim tawv nqaij physiological kub ntau yam) tiv thaiv thermal nociceptor triggering. Microencapsulated theem-hloov cov khoom coatings (5-10 μm particle inch) undergo solid-kua theem hloov mus rau epidermal tiv tauj kom nqus cua sov ntau dhau thiab stabilize koob nto kub ntawm 33 ± 0.5℃. Cov txheeb ze rau cov chav tsis muaj xwm txheej- koob kub (22 degree), cov khoom siv thermally tswj txo qhov ntsuas VAS qhov mob los ntawm 1.2 cov ntsiab lus ntawm tag nrho 10-point scale.

Ib qho kev pom zoo tshaj tawm qhov ntau muaj tshwm sim los txo qis cov lus teb mob neurodynamic. Kev nrawm qis dua 3 mm / s ncua lub sijhawm txhawb nqa ntawm cov ntaub so ntswg nkag thiab txhawb nqa txuas ntxiv C- fiber ntau excitation; velocities tshaj 50 mm / s propagate kev ntxhov siab nthwv dej los ntawm cov ntaub so ntswg inertia kom nthuav cov cheeb tsam ntawm neural recruitment. Qhov nruab nrab qhov nrawm nrawm ntawm 10-20 mm / s txwv cov neeg kho tshuab stimulation mus rau thaj tsam ntawm 0.3-0.5 mm cov ntaub so ntswg hneev taw thiab txo qis tag nrho cov suav ntawm cov hlab ntsha peripheral terminals. Robotic koob xa tuaj tswj tus nqi tas li 15 mm / s pub nrog kev txwv nrawm (<0.5 g), lowering pain-linked theta-band electroencephalogram (EEG) power from 18–22 μV²/Hz under manual insertion to 10–12 μV²/Hz.

Psychophysiological cia siab rau 30-40% ntawm kev paub txog kev mob. Opaque koob shielding mitigates ua ntej- txheej txheem kev ntxhov siab vim thiab txo qhov mob nruab nrab ntawm 0.8 cov ntsiab lus. Kev ntxhov siab zoo tshaj plaws yog ua tiav los ntawm kev cuam tshuam ntau qhov kev cuam tshuam: citrus tsw tso tawm 0.5 s ua ntej nkag mus rau olfactory pathways nrog rau 2000 Hz, 40 dB auditory cue los pab txhawb kev sib koom ua ke cortical multisensory thiab cuam tshuam cov kev xav kom deb ntawm nociceptive input. Kev ua haujlwm nyob ze -infrared spectroscopy (fNIRS) txheeb xyuas qhov kev cuam tshuam multimodal boosts prefrontal cortical oxyhemoglobin concentration los ntawm 15%, qhia txog kev hloov pauv kev txawj ntse.