Jeonghwan Cheon

Preprint, In preparation | 2024

Spontaneous emergence of periodotopic map through neuronal interference in auditory cortex

Jeonghwan Cheon, Se-Bum Paik

Cheon2024a

Abstract

Pitch perception, the ability to detect the periodicity of a harmonic sound envelope, is a fundamental auditory function that enables the recognition of speech and music. While it is clear how the mechanical filtering of the cochlea extracts frequency information into a tonotopic map, it remains unclear how periodicity is extracted along the auditory pathway. Here, we propose that periodicity processing can spontaneously emerge through interference between the tonotopic maps of the ipsilateral and contralateral auditory pathways. We demonstrated that the chiasm of the bilateral tonotopic maps with tilting generates wiring for two different frequencies. We showed that periodicity coding emerges from the interference of these two frequency components. Next, we simulated the tonotopic and periodotopic maps as a result of this interference and compared them with optical recording data from the primary auditory cortex of cats. Our model can explain the relative organization between tonotopic and periodotopic maps, such as the high-frequency preference of high-pitch areas. These results suggest how a periodotopic map simply develops through neuronal interference within a tonotopically organized auditory pathway

Highlights

  • Periodotopic map observed in the tonotopically organized auditory pathway
  • Periodicity coding emerges from interference between bilateral tonotopic maps
  • Tonotopic gradient preserves after the chiasm of bilateral auditory pathways
  • Model can explain the relative organization between auditory functional maps

Preprint and Proceedings

    • Spontaneous emergence of periodotopic map through neuronal interference in auditory cortex (2024)
    • Jeonghwan Cheon, Se-Bum Paik
    • Proceedings of Cognitive Computational Neuroscience
      • Short paper

Conferences

    • Korean Society for Brain and Neural Sciences (KSBNS), Oct 2024, Gyeongju, KR.
    • Jeonghwan Cheon, Se-Bum Paik.
    • ”Emergence of functional circuits from neuronal interference in auditory cortex”
    • Society for Neuroscience (SfN), Oct 2024, Chicago, IL, US.
    • Jeonghwan Cheon, Se-Bum Paik.
    • ”Emergence of functional circuits from neuronal interference in auditory cortex”
    • Cognitive Computational Neuroscience (CCN), Aug 2024, Boston, MA, US.
    • Jeonghwan Cheon, Se-Bum Paik.
    • "Spontaneous emergence of periodotopic map through neuronal interference in auditory cortex"
      • Abstract Short paper

Workshop Presentations

    • Workshop on Higher-level Cognition @ KSBNS, Aug. 18, 2024, Jecheon, KR.
    • Jeonghwan Cheon, Se-Bum Paik.
    • ”Emergence of acoustic functional maps from neuronal interference in auditory cortex”

ⓒ 2024. Jeonghwan Cheon. All Rights Reserved.