2.0 Theoretical Background

Outline 2.0 Theoretical Background

• 2.1 The Auditory What (“Ventral”) Stream
  • Definition
  • Funktion
  • lateralization differences
  • Anatomie
    • Rolls Group 1
• 2.2 The Auditory Where (“Dorsal”) Stream
  • 2.2.1 Debate
    • Rauschecker vs Hickock&Poeppel (where vs how)
    • beide modelle erklären
  • 2.2.2 Anatomical Definition & Evidence
    • Glasser area A4, A5, Parietal Cortex
    • Rolls Group 3
  • 2.2.3 Synthesis
    • Defining the where-stream as spatial/motion stream (maybe motor?)

2.0 Theoretical Background

The auditory dual-stream framework proposes that sound processing diverges into two functionally and anatomically distinct pathways after being processed by the primary auditory cortex.
The ventral ‘what’-stream decodes object identity and the dorsal ‘where’-stream processes spatial localization and sensorimotor integration. This organization mirrors the well-established visual dual-stream architecture. Romanski (2004) demonstrated in non-human primates that this division is not modality-specific, but ‘domain’-specific: the dorsolateral prefrontal cortex (dlPFC), including areas 46, 8a and 8b, receives converging spatial input from both posterior parietal (visual) and caudal superior temporal (auditory) cortices, while the ventrolateral PFC (vlPFC), including areas 45 and 12, receives object-related input from inferotemporal and anterior auditory association cortices (Figure 1, Romanski 2004, originally based on Arnsten (2003)). This domain-specific principle provides the theoretical foundation for the present thesis. The mapping of these macaque pathways onto human prefrontal architecture - specifically the FEF for the dorsal stream and the IFJa for the ventral stream - is elaborated in Sections 2.1. and 2.2, grounding on neuroimaging evidence (Bedini & Baldauf (2021)).

Transclude of 2.1-The-Auditory-What-("Ventral")-Stream#21-the-auditory-what-ventral-stream

Transclude of 2.2-The-Auditory-Where-("Dorsal")-Stream#22-the-auditory-where-dorsal-stream

see also

Type:
Tags:
Status:
Location:
Created: 2026-02-09 11:46

Source