Temporal integration for amplitude modulation in childhood: Interaction between internal noise and memory

Cabrera, Laurianne; Lorenzini, Irene; Rosen, Stuart; Varnet, Léo; Lorenzi, Christian

doi:10.1016/j.heares.2021.108403

Cited by 9 publications

(13 citation statements)

References 47 publications

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“…Thus, AM coding has a prolonged maturation with earlier development of slow AM processing at the cortical level. This is consistent with behavorial data obtained in children showing a rather long maturation of AM detection abilities (13,16,17). Nevertheless, recent computational modelling studies in children suggest that sensory processing for AM cues, that is envelope filtering, is probably mature before 5 years of age, but that the worse AM detection thresholds obtained by young children may relate to the development of higher stages of processing, and in particular to higher level of internal noise.…”

Section: Discussionsupporting

confidence: 89%

“…Many psychoacoustic paradigms have indeed identified poorer AM detection performance in young children and infants as compared to adults. At the same time, this difference cannot merely be attributed to maturation of auditory filters (15)(16)(17). Researchers in developmental psychoacoustics have then argued that a decrease in internal noise levels may better account for performance improvement with age (18), an hypothesis that received support from recent computational studies (15,16).…”

Section: Introductionmentioning

confidence: 99%

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Neural processing of auditory temporal modulations in awake infants

Lorenzini¹,

Labendzki²,

Bernson³

et al. 2022

Preprint

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Human infants are able to acquire quickly a language by “simple” exposure to speech. This remarkable capacity is rather surprising knowing that the auditory cortices are still developing until the end of adolescence. Many psychoacoustic studies have explored how the adult auditory system processes the acoustic components of speech, showing that slow variations in sound amplitude over time (AM) are of crucial importance for speech perception. In the present study, we investigated the processing of AM using electroencephalography (EEG) in 3- and 10-month-old awake infants, as well as in young adults. We measured the auditory brain activity following the modulation frequency of sinusoidally amplitude modulated tones at 8 and 40 Hz. Results showed that the Amplitude-Modulation Following Response (AMFR) was observable at 8 Hz at all ages, but that only adults showed reliable responses at 40 Hz. In light of the previous literature, we propose that the neural processing sources of faster AM rates may be located preponderantly in subcortical regions at younger ages, while, in adults, both cortical and subcortical sources are activated. Such neuro-developmental trajectories might underlie the processing of fine acoustic cues that are necessary for speech and language development.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Neural processing of auditory temporal modulations in awake infants

Lorenzini¹,

Labendzki²,

Bernson³

et al. 2022

Preprint

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“…All of these effects are to be expected. Age-related increases in the amplitude of the N1 of the ACC have previously been observed (Martin et al, 2010) and both SiN performance and AM thresholds are known to improve over childhood (Cabrera et al, 2022;Hall & Grose, 1994;Talarico et al, 2007). The lack of such effects on the LiSN-S can be attributed to the fact that standard scores on this test are age-adjusted.…”

Section: Discussionmentioning

confidence: 86%

Amplitude modulation perception and cortical evoked potentials in children with listening difficulties and their typically-developing peers

Petley,

Blankenship,

Hunter

et al. 2023

Preprint

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PurposeAmplitude modulations (AM) are important for speech intelligibility, and deficits in speech intelligibility are a leading source of impairment in childhood listening difficulties (LiD). The present study aimed to explore the relationships between AM perception and speech-in-noise (SiN) comprehension in children and to determine whether deficits in AM processing contribute to childhood LiD. Evoked responses were used to parse the neural origin of AM processing.MethodForty-one children with LiD and forty-four typically-developing children, ages 8-16 y.o., participated in the study. Behavioral AM depth thresholds were measured at 4 and 40 Hz. SiN tasks included the LiSN-S and a Coordinate Response Measure (CRM)-based task. Evoked responses were obtained during an AM Change detection task using alternations between 4 and 40 Hz, including the N1 of the acoustic change complex, auditory steady-state response (ASSR), P300, and a late positive response (LP). Maturational effects were explored via age correlations.ResultsAge correlated with 4 Hz AM thresholds, CRM Separated Talker scores, and N1 amplitude. Age-normed LiSN-S scores obtained without spatial or talker cues correlated with age-corrected 4 Hz AM thresholds and area under the LP curve. CRM Separated Talker scores correlated with AM thresholds and area under the LP curve. Most behavioral measures of AM perception correlated with the SNR and phase coherence of the 40 Hz ASSR. AM Change RT also correlated with area under the LP curve. Children with LiD exhibited deficits with respect to 4 Hz thresholds, AM Change accuracy, and area under the LP curve.ConclusionsThe observed relationships between AM perception and SiN performance extend the evidence that modulation perception is important for understanding SiN in childhood. In line with this finding, children with LiD demonstrated poorer performance on some measures of AM perception, but their evoked responses implicated a primarily cognitive deficit.

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“…This is -to the best of our knowledge -the first study to assess (double-pass) AM detection consistency in childhood with a large group of participants (N = 86). We tested the hypothesis, supported by previous simulation studies (Cabrera et al, 2019(Cabrera et al, , 2022Hill et al, 2004), that processing efficiency for AM detection improves with age during childhood because of a decrease in internal noise. To this aim, participants underwent a double-pass task measuring both percent correct (PC) and percent agreement (PA) in AM detection across two testing sessions.…”

Section: Experimental and Computational Investigation Of Processing E...mentioning

confidence: 79%

“…Based on previous evidence (Cabrera et al, 2019(Cabrera et al, , 2022, we expected to observe, in children as compared with adults: overall poorer AM sensitivity; comparable susceptibility to AM masking and poorer double-pass consistency.…”

Section: Introductionmentioning

confidence: 86%

Reduced processing efficiency impacts auditory detection of amplitude modulation in children: Evidence from an experimental and modelling study

Lorenzini

Varnet²,

Lorenzi

et al. 2023

The Journal of the Acoustical Society of America

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Detection of amplitude modulations (AM) improves until 10 years of age. This development may not be explained only by sensory maturation but also by improvements in processing efficiency: the ability to make efficient use of available sensory information. This hypothesis was tested on 86 6-to-9-year-olds and 15 adults using AM-detection tasks assessing sensitivity, masking and response consistency. Sensitivity was estimated by the detection thresholds of a sinusoidal AM applied to a pure-tone carrier; AM masking was estimated as threshold elevation produced when replacing the pure-tone carrier by a narrowband noise; response consistency was estimated using a double-pass paradigm where the same set of stimuli was presented twice. Results showed that AM sensitivity improved from childhood to adulthood. AM masking did not change with age, indicating that the selectivity of AM filters was adult-like by 6 years. However, response consistency increased developmentally, suggesting reduced processing efficiency in childhood. At the group level, double-pass data were well simulated by a model of the auditory system assuming higher internal noise for children than adults. At the individual level, a sub-optimal decision strategy was added to better capture inter-individual variability. Thus, both systematic and stochastic inefficiencies may explain worse AM detection in childhood.

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Temporal integration for amplitude modulation in childhood: Interaction between internal noise and memory

Cited by 9 publications

References 47 publications

Neural processing of auditory temporal modulations in awake infants

Neural processing of auditory temporal modulations in awake infants

Amplitude modulation perception and cortical evoked potentials in children with listening difficulties and their typically-developing peers

Reduced processing efficiency impacts auditory detection of amplitude modulation in children: Evidence from an experimental and modelling study

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