Stimulus envelope, not temporal fine structure, counts as temporal information

Evidence

The waveform in Figure 5–1 is plotted along with its envelope, which is a representation of the slow temporal variations in the stimulus. This waveform illustrates two aspects of the stimulus that are time dependent: rapid individual pressure variations, commonly called temporal fine structure or the carrier, and slower changes in the pressure variations, referred to as the envelope or the modulator. Both of these aspects are labeled in Figure 5–1 for reference. The rapid variations are very important for auditory perception, but we do not typically perceive them as temporal events, like we do the envelope. Thus, the perception of temporal fine structure is usually not treated as an aspect of temporal processing. On the other hand, we consider the ability to represent stimulus envelope as a component of temporal processing. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 930

Categorization

Category: Definitional Content

• DEFINE: Clarifies the envelope/fine-structure distinction and which one temporal processing concerns.

Related

• Auditory stimuli separate into fine structure and slower envelope (similarity 0.90)
• Temporal fine structure is vital yet not perceived as a temporal event (similarity 0.86)
• Envelope and temporal fine structure exist at three distinct processing levels (similarity 0.84)
• Envelope and fine structure are mathematically orthogonal but not perceptually independent (similarity 0.82)
• The TMTF yields three distinct measures of temporal resolution (similarity 0.81)
• A half-wave-rectified-threshold spike model encodes both envelope and fine structure in one mechanism. (similarity 0.81)
• Amplitude-modulated sounds split into slow-varying envelope and fast-varying fine structure (similarity 0.81)
• Periodicity cues for pitch split into fine-structure, envelope, and interaction periodicities (similarity 0.81)
• Neural information is encoded in the patterning of voltage spikes (similarity 0.80)
• Envelope-structured sounds produce time-variant temporal masking patterns. (similarity 0.80)
• Auditory spiketrain periodicities can encode both envelope and fine structure (similarity 0.79)
• Hearing is highly sensitive to temporal changes in sound (similarity 0.79)
• Temporal processing is essential for hearing speech and music (similarity 0.79)
• Temporal envelope suffices for speech while fine structure carries pitch information (similarity 0.79)
• Envelope and temporal fine structure are mathematically orthogonal and independently extractable via Hilbert transform (similarity 0.79)

Broader Connections

• Pooled across fibers, spike timing codes the stimulus period as a multiple #qualifies (0.75) — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1210
• Wider stimulus bandwidths improve listeners’ ability to detect temporal gaps #complicates (0.72) — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 966