Cortical intensity encoding becomes ear-independent through strong interhemispheric connections

Evidence

Lord Rayleigh (James William Strutt, 1843–1919) was strongly influenced by the work of Helmholtz. His book The Theory of Sound also discussed acoustic problems using mathematics. This work laid the groundwork for future study linking acoustics with perception. Rayleigh was also keenly interested in the ability to localize sounds in space. He proposed that two acoustic cues are used for sound localization: intensity differences and time differences across the ears. The intensity differences were produced by the presence of the head in the sound field, which can effectively block sound transmission. The time differences were produced by the differential travel times of sound across the ears. This theory, called the Duplex Theory of Sound Localization, has been validated numerous times (see Chapter 7). — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 70 (#qualifies, via linked claim)

Categorization

• XREF: connects to: Contralateral efferent-mediated processing can spatially segregate concurrent speech sources by ear; Binaural sound localization depends on ear-level temporal and intensity encoding efficiency — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 70; Interaural level sensitivity reflects peripheral level-coding efficiency, not central processing. (+3 more)

Related

• Binaural sound localization depends on ear-level temporal and intensity encoding efficiency (similarity 0.93)
• Head separation between ears produces arrival-time and intensity cues for direction (similarity 0.90)
• Binaural localization accuracy depends on monaural coding efficiency before interaural comparison (similarity 0.89)
• Rayleigh first proposed ILDs code high frequencies and ITDs code low frequencies (similarity 0.87)
• Horizontal localization uses binaural cues while vertical localization does not (similarity 0.81)
• Sound source location is encoded in waveform distortions between the ears (similarity 0.81)
• Humans localize sound accurately using only two real-time ear signals (similarity 0.81)
• Interaural level differences alone can shift the perceived position of a sound source (similarity 0.81)
• Primary auditory cortex shows the strongest intensity encoding along the auditory pathway (similarity 0.81)
• Lateralization is one-dimensional while localization spans three dimensions (similarity 0.81)
• Auditory spatial perception emerges from weighted combination of localization cues (similarity 0.81)
• Directional hearing rests on interaural time and intensity differences. (similarity 0.81)
• Sound localization fuses independent sensory evidence into one coherent percept (similarity 0.80)
• Head shading creates interaural level differences used for sound localization (similarity 0.80)
• Interaural level sensitivity reflects peripheral level-coding efficiency, not central processing. (similarity 0.80)

Broader Connections

• Interaural level sensitivity reflects peripheral level-coding efficiency, not central processing. #contradicts (0.78)
• Binaural sound localization depends on ear-level temporal and intensity encoding efficiency #qualifies (0.75) — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 70