cluster: s-course psychoneuro

resource: course-brain_building_block

some keywords from 2025-12-12
av hmi
automotive ui conference25
self driving car

Mechanics of hearing

by yuttana.r@chula.ac.th
Basics of Sound Waves

• sound = pressure
  • rms
    • 2x10-5 pascal vs 20 pascal
• reflections
  • acoustic impedance
    the middle ears
• movable structure
• malleus
  sound propagation inside the cochlea
• organs
  • ihcs
  • outer hair cell ohcs : amplifiers
• diff freq will make cochlea vibrate in diff parts
  cochlear tonotopic map
• narrower,stiffer vs broader, more compliant
• natural freq= sqr stiffness/mass
• similar to ocean wave occurred in shallow vs deep zone
  hair cells
• mechanical gating
• mechanical properties of bundle
  • bundle stiffness, receptor potential, and displacement
• phenomenological model
• electromotility
  • cochlear amplifier: without this, we can’t hear low freq
• Otoacoustic emissons (OAEs)
• Comparative studies of OAEs
  • frogs, tokay gecko
    • organ: tympanum and …
    • we can actually attach mic to their ear and get freq
      peripheral
      idea: light from jellyfish - make the frog emit when stress to help sci bros

The Oddball Paradigm and Mismath Negativity

by Jamie O’Reily
keywords

• ERP event related potential
  The Oddball Paradigm
• 80% normal 20% mismatch (deviant)
  Mismatch Negativity (MMN)
• ??
  Sensory-memory Violation / Prediction Error
• many researches
  • predictive coding theory
    • sensory input >> phy feature abstraction >> deviance detection, …
      Confounds of the Oddball Paradigm
• stimulus-specific adaption
• auditory response sensitivity to physical properties of stimuli
  Control Paradigms
• some flip-flop, roving test that I don’t understand
  Confounds of the Control Paradigms

Summary

• MMN might be a sensory prediction-error signal
• difference waveform acan obscure the effect
• control paratigism suffer from confounds
• implications for clinical and preclinical research

created on: Fri Dec 12 2025