ArticleJournal of neurophysiology2015
Hierarchical effects of task engagement on amplitude modulation encoding in auditory cortex.
Article in Journal of neurophysiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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Who cites it
23 citing papers in PubMed.
- Hierarchical transformations in sound envelope encoding differ across cortical layers.Cerebral cortex (New York, N.Y. : 1991) · 2026Article
- Decoding of frequency-modulated sweeps by core and belt neurons in the alert macaque auditory cortex.Journal of neurophysiology · 2025Article
- Interareal and interlaminar differences in sound envelope encoding in core and parabelt auditory cortex.bioRxiv : the preprint server for biology · 2025Article
- Hierarchical emergence of opponent coding in auditory belt cortex.Journal of neurophysiology · 2025Article
- Formation of an auditory sensory representation in posterior striatum emerges during a brief temporal window of associative learning in normal and hearing-impaired gerbils.Frontiers in systems neuroscience · 2025Article
- Hierarchical differences in the encoding of amplitude modulation in the subcortical auditory system of awake nonhuman primates.Journal of neurophysiology · 2024Article
- Orbitofrontal cortex modulates auditory cortical sensitivity and sound perception in Mongolian gerbils.Current biology : CB · 2024Article
- Organization of orbitofrontal-auditory pathways in the Mongolian gerbil.The Journal of comparative neurology · 2023Article
- An Emergent Population Code in Primary Auditory Cortex Supports Selective Attention to Spectral and Temporal Sound Features.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021Article
- Temporally precise population coding of dynamic sounds by auditory cortex.Journal of neurophysiology · 2021Article
- Temporal Encoding is Required for Categorization, But Not Discrimination.Cerebral cortex (New York, N.Y. : 1991) · 2021Article
- Choice-related activity and neural encoding in primary auditory cortex and lateral belt during feature-selective attention.Journal of neurophysiology · 2021Article
- Lemniscal Corticothalamic Feedback in Auditory Scene Analysis.Frontiers in neuroscience · 2021Review
- Amplitude modulation encoding in the auditory cortex: comparisons between the primary and middle lateral belt regions.Journal of neurophysiology · 2020Article
- Reward cues readily direct monkeys' auditory performance resulting in broad auditory cortex modulation and interaction with sites along cholinergic and dopaminergic pathways.Scientific reports · 2019Article
- Low-Frequency Spike-Field Coherence Is a Fingerprint of Periodicity Coding in the Auditory Cortex.iScience · 2018Article
- Age-Related Changes in Temporal Processing of Rapidly-Presented Sound Sequences in the Macaque Auditory Cortex.Cerebral cortex (New York, N.Y. : 1991) · 2018Article
- Developmental deprivation-induced perceptual and cortical processing deficits in awake-behaving animals.eLife · 2018Article
- Background noise exerts diverse effects on the cortical encoding of foreground sounds.Journal of neurophysiology · 2017Article
- Hierarchical differences in population coding within auditory cortex.Journal of neurophysiology · 2017Article
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5 authors.
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Abstract
We recorded from middle lateral belt (ML) and primary (A1) auditory cortical neurons while animals discriminated amplitude-modulated (AM) sounds and also while they sat passively. Engagement in AM discrimination improved ML and A1 neurons' ability to discriminate AM with both firing rate and phase-locking; however, task engagement affected neural AM discrimination differently in the two fields. The results suggest that these two areas utilize different AM coding schemes: a "single mode" in A1 that relies on increased activity for AM relative to unmodulated sounds and a "dual-polar mode" in ML that uses both increases and decreases in neural activity to encode modulation. In the dual-polar ML code, nonsynchronized responses might play a special role. The results are consistent with findings in the primary and secondary somatosensory cortices during discrimination of vibrotactile modulation frequency, implicating a common scheme in the hierarchical processing of temporal information among different modalities. The time course of activity differences between behaving and passive conditions was also distinct in A1 and ML and may have implications for auditory attention. At modulation depths ≥ 16% (approximately behavioral threshold), A1 neurons' improvement in distinguishing AM from unmodulated noise is relatively constant or improves slightly with increasing modulation depth. In ML, improvement during engagement is most pronounced near threshold and disappears at highly suprathreshold depths. This ML effect is evident later in the stimulus, and mainly in nonsynchronized responses. This suggests that attention-related increases in activity are stronger or longer-lasting for more difficult stimuli in ML.
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