Primary auditory cortex shows the strongest intensity encoding along the auditory pathway

Evidence

Our findings further suggest considerable differences along the auditory pathway and across auditory regions in cortex with respect to the strength of the relationship between neural activity and sound intensity. The relationship was most pronounced in the posterior medial section of HG (which includes primary AC), a little less so in PT and comparatively weak in the anterolateral sections of HG and in subcortical regions. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2610

Our findings further suggest considerable differences along the auditory pathway and across auditory regions in cortex with respect to the strength of the relationship between neural activity and sound intensity. The relationship was most pronounced in the posterior medial section of HG (which includes primary AC), a little less so in PT and comparatively weak in the anterolateral sections of HG and in subcortical regions. These findings largely conform to earlier studies reporting the most robust level dependence in primary AC, but less consistent results with regard to PT and a generally weak sensitivity to level changes in more lateral and anterior regions of HG (Hart et al. 2002 ; Brechmann et al. 2002 ; Ernst et al. 2008 ). — Dijk, Pim van, Physiology, Psychoacoustics and…, 2642

The relationship was most pronounced in the posterior medial section of HG (which includes primary AC), a little less so in PT and comparatively weak in the anterolateral sections of HG and in subcortical regions. … These findings largely conform to earlier studies reporting the most robust level dependence in primary AC, but less consistent results with regard to PT and a generally weak sensitivity to level changes in more lateral and anterior regions of HG (Hart et al. 2002 ; Brechmann et al. 2002 ; Ernst et al. 2008 ). — Dijk, Pim van, Physiology, Psychoacoustics and…, 2642

Categorization

• corroborated: 5 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 2610; Dijk, Pim van, Physiology, Psychoacoustics and…, 2642
• XREF: connects to: Auditory cortex activation linearly reflects perceived loudness rather than physical intensity — Dijk, Pim van, Physiology, Psychoacoustics and…, 2610; Subcortical auditory structures encode sound intensity linearly while cortex compresses it. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2645

Broader Connections

• Subcortical auditory structures encode sound intensity linearly while cortex compresses it. #expands (0.85) — Dijk, Pim van, Physiology, Psychoacoustics and…, 2645