Development of infant mismatch responses to auditory pattern changes between 2 and 4 months old

He, Chao; Hotson, Lisa; Trainor, Laurel J.

doi:10.1111/j.1460-9568.2009.06625.x

Cited by 56 publications

(61 citation statements)

References 45 publications

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“…Such responses were observed in 4-month-olds, but not 3-month olds. These findings differed from those of an earlier study in which cortical responses to a similar change were found at both 3-and 4-months to pairs of synthesized piano tones that contained the fundamental frequency (He et al, 2007). The results of , therefore, suggest the emergence of complex pitch representation between 3 and 4 months of age.…”

Section: Introductioncontrasting

confidence: 99%

“…That learning to categorize by missing fundamental pitch did not take longer for infants or adults when the number of complexes in each category was increased from three to ten suggests that participants were not simply memorizing the specific exemplars of each pitch category without reference to the pitch. He et al (2007) reported mismatch evoked responses to a change in the fundamental frequency of a repeated piano tone in 2-, 3-, and 4-month-old infants, and found that mismatch responses were elicited in both 2-and 4-month-olds when two elements in an alternating low-high tone sequence were presented in reverse order (i.e., highlow). However, , reported that mismatch responses to a similar change in the direction of a pitch shift signaled by a missing fundamental complex could not be elicited from infants younger than 4 months of age.…”

Section: Discussionmentioning

confidence: 99%

“…One possibility is that 3-month-olds do represent missing fundamental pitch cortically, but that the cortical neural response to complex pitch changes is not evident at the scalp. As He et al (2007) point out, the evoked response recorded at the scalp may reflect the sum of activity resulting from different neural processes. This fact may explain why different studies of the mismatch response in early infancy report such different waveform morphologies in infants of the same age (reviewed by He et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

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Perception of missing fundamental pitch by 3- and 4-month-old human infants

Lau

Werner

2012

The Journal of the Acoustical Society of America

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A hallmark of complex pitch perception is that the pitch of a harmonic complex is the same whether or not the fundamental frequency is present. By 7 months, infants appear to discriminate on the basis of the pitch of the missing fundamental (MF). Although electrophysiological cortical responses to MF pitch changes have been recorded in infants younger than 7 months, no psychophysical studies have been published. This study investigated the ability of 3-and 4-month-olds to perceive the pitch of MF harmonic complexes based on fundamentals of 160 Hz and 200 Hz using an observer-based method. In experiment I, to demonstrate MF pitch discrimination, 3-and 4-month-olds were required to ignore spectral changes in complexes with the same fundamental and to respond only when the fundamental changed. In experiment II, a 60-260 Hz noise was presented with complexes to mask combination tones at the fundamental frequency. In experiment III, complexes were bandpass filtered with a À12 dB/octave slope to limit use of spectral edge cues and presented with a pink noise to mask all distortion products. Nearly all infants tested categorized complexes by MF pitch in these experiments, suggesting perception of the missing fundamental at 3 months.

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Section: Introductioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Perception of missing fundamental pitch by 3- and 4-month-old human infants

Lau

Werner

2012

The Journal of the Acoustical Society of America

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“…A simple pitch change elicits a frontally negative MMN-like response in 3-and 4-month-old infants ϳ210 ms after stimulus onset, but a slow frontal positive wave in younger infants (He et al, 2007(He et al, , 2009a. Despite the different responses at different ages, the important point is that cortical correlates of pitch discrimination are apparent at all ages.…”

Section: Introductionmentioning

confidence: 96%

Finding the Pitch of the Missing Fundamental in Infants

He¹,

Trainor²

2009

Journal of Neuroscience

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Pitch perception is critical for the perception of speech and music, for object identification, and for auditory scene analysis, whereby representations are derived for each sounding object in the environment from the complex sound wave that reaches the ears. The perceived pitch of a complex sound corresponds to its fundamental frequency. However, removal of energy at the fundamental does not alter the pitch because adults use the harmonics to derive the pitch (Bendor and Wang, 2005; Trainor, 2008). Although sound frequency is represented subcortically, the integration of harmonics into a representation of pitch does not occur until auditory cortex (Bendor and Wang, 2005). Given that auditory cortex is immature in young infants, we examined the development of cortical representations for pitch by measuring electrophysiological (EEG) responses to pitch changes that required processing the pitch of the missing fundamental. Adults and infants 4 months and older showed a mismatch negativity response to these pitch changes, but 3-month-old infants did not. Thus, cortical representations of the pitch of the missing fundamental emerge between 3 and 4 months of age, indicating that there is a profound change in auditory perception for pitch in early infancy.

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“…Studies in infants suggest that the positive polarity is an immature feature. The neurophysiological correlates of this inverted polarity, however, are unknown (Carral et al, 2005;He et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Auditory event-related potentials at preschool age in children born very preterm

Hövel¹,

Partanen²,

Huotilainen³

et al. 2014

Clinical Neurophysiology

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Auditory event-related potentials at preschool age in children born very preterm.Hövel, Holger; Partanen, Eino; Huotilainen, Minna; Lindgren, Magnus; Rosén, Ingmar; Fellman, Vineta Link to publication Citation for published version (APA): Hövel, H., Partanen, E., Huotilainen, M., Lindgren, M., Rosén, I., & Fellman, V. (2014). Auditory event-related potentials at preschool age in children born very preterm. Clinical Neurophysiology, 125(3), 449-456. DOI: 10.1016449-456. DOI: 10. /j.clinph.2013 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Highlights• In auditory event-related potentials of preschool children, we found a faster decrease in latencies of P1 and N2 around the age of 5 years than previously described.• At preschool age, children born very preterm had obligatory responses that differed from term-born and late preterm-born children.• The decrease of N1 amplitude in the very preterm born children might reflect cognition, since similar amplitude findings have been described in term-born children with cognitive deficits. 3 AbstractObjective: To assess auditory event-related potentials at preschool age in children born very preterm (VP, 27.4±1.9 gestational weeks, n=70) with a high risk of cognitive dysfunction. Methods:We used an oddball paradigm consisting of a standard tone randomly replaced by one of three infrequent deviants (differing in frequency, sound direction or duration). Results:The P1 and N2 latencies were inversely correlated to age (50-63 months) both in VP Conclusions: Our data suggest a fast maturation of P1 and N2 responses with fast decrease in P1 and N2 latencies around the age of 5 years. Mismatch negativity response does not seem to be a robust measure for defining abnormalities in VP children. Significance:In ERP studies in preschool children, even small, non-significant group differences in age at recording should be corrected for. Very preterm born children at preschool age have aERP patterns as earlier described in full-term born children with cognitive deficits. 4

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Development of infant mismatch responses to auditory pattern changes between 2 and 4 months old

Cited by 56 publications

References 45 publications

Perception of missing fundamental pitch by 3- and 4-month-old human infants

Perception of missing fundamental pitch by 3- and 4-month-old human infants

Finding the Pitch of the Missing Fundamental in Infants

Auditory event-related potentials at preschool age in children born very preterm

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