Advanced Hair Cell Simulation - Cochlear Biomechanics & Neural Firing Lab

COCHLEAR BIOMECHANICS & NEURAL SPIKE STREAM Tonotopy: 4,000 Hz

🎙️ COCHLEAR PODCAST DEEP DIVE 1. The Cathedral Metaphor

00:00 / 21:18

VISUALIZATION PERSPECTIVE

Acoustic Frequency ($f$) 4,000 Hz

Apex (200 Hz) Mid (4 kHz) Base (16 kHz)

Sound Pressure Level ($L_p$) 50 dB SPL

10 dB (Quiet) 50 dB (Conversational) 100 dB (Loud)

Hair Cell Physiology & Pathology

OHC Prestin Electromotility 100% (Active)

Feeds mechanical force back into basilar membrane to sharpen tuning.

Pathology / Lesion Pattern

IHC Ribbon Vesicle Pool / Spont. Rate Medium (50 sp/s)

BM Displ. Gain

+42.5 dB

IHC Depolarization

-48.2 mV

ANF Firing Rate

184 sp/s

Vector Strength ($R$)

0.82

STRUCTURE LEGEND

Inner Hair Cell (IHC Primary Transducer)

Outer Hair Cells (OHC Prestin Motors, 3 Rows)

K+ / Ca2+ Ion Flux Through MET Channels

Auditory Nerve Action Potential (Spike)

Tectorial & Basilar Membrane Complex