Auditory-Visual Coordination in the First Year of Life

1978 ◽  
Vol 1 (3) ◽  
pp. 229-239 ◽  
Author(s):  
Harry McGurk ◽  
John MacDonald
Keyword(s):  
Sensory Systems ◽  
Ontogenetic Development ◽  
First Year ◽  
Developmental Sequence ◽  
Human Infants ◽  
Data Support ◽  
Competing Hypotheses ◽  
First Year Of Life

Two competing hypotheses concerning the nature of inter-modal development are outlined. The first sees the development proceeding from a state of discrete, independent sensory systems towards integration and synthesis between modalities. This is contrasted with a second viewpoint in which the early responsiveness of the organism is seen as a-modal and the developmental sequence as one of increasing sensory differentiation. A number of studies which have investigated auditory-visual co-ordination in young human infants, are reviewed. It is concluded that the data support the notion of ontogenetic development being a process of integration between sensory systems that are initially relatively independent.

Distribution ofStreptococcus mitisbiovar 1 phenotypes on shedding and non-shedding oral surfaces of human infants during the first year of life

2005 ◽  
Vol 17 (3) ◽  
Author(s):  
Jennifer L. Kirchherr ◽  
George H. Bowden ◽  
Dorothy A. Richmond ◽  
Michael J. Sheridan ◽  
Katherine A. Wirth ◽  
...  
Keyword(s):  
First Year ◽  
Human Infants ◽  
First Year Of Life

The critical role of experience in the early development of multisensory perception

2012 ◽  
Vol 25 (0) ◽  
pp. 200
Author(s):  
David J. Lewkowicz
Keyword(s):  
Selective Attention ◽  
Critical Role ◽  
Early Experience ◽  
Multisensory Perception ◽  
First Year ◽  
Early Deprivation ◽  
Human Infants ◽  
Perceptual Skills ◽  
First Year Of Life ◽  
Perceptual Narrowing

Human infancy is a time of rapid neural and behavioral development and multisensory perceptual skills emerge during this time. Both animal and human early deprivation studies have shown that experience contributes critically to the development of multisensory perception. Unfortunately, Bodison because the human deprivation studies have only studied adult responsiveness, little is known about the more immediate effects of early experience on multisensory development. Consequently, we have embarked on a program of research to investigate how early experience affects the development of multisensory perception in human infants. To do so, we have focused on multisensory perceptual narrowing, an experience-dependent process where initially broad perceptual tuning is narrowed to match the infant’s native environment. In this talk, I first review our work demonstrating that multisensory narrowing characterizes infants’ response to non-native (i.e., monkey) faces and voices, that the initially broad tuning is present at birth, that narrowing also occurs in the audiovisual speech domain, and that multisensory narrowing is an evolutionarily novel process. In the second part of the talk, I present findings from our most recent studies indicating that experience has a seemingly paradoxical effect on infant response to audio–visual synchrony, that experience narrows infant response to amodal language and intonational prosody cues, and that experience interacts with developmental changes in selective attention during the first year of life resulting in dramatic developmental shifts in human infants’ selective attention to the eyes and mouth of their interlocutors’ talking faces.

scholarly journals Stability of neuronal avalanches and long-range temporal correlations during the first year of life in human infants

2020 ◽  
Vol 225 (3) ◽  
pp. 1169-1183 ◽  
Author(s):  
Mostafa Jannesari ◽  
Alireza Saeedi ◽  
Marzieh Zare ◽  
Silvia Ortiz-Mantilla ◽  
Dietmar Plenz ◽  
...  
Keyword(s):  
Long Range ◽  
First Year ◽  
Human Infants ◽  
Temporal Correlations ◽  
First Year Of Life ◽  
Neuronal Avalanches

scholarly journals Infant anticipatory stress

2010 ◽  
Vol 7 (1) ◽  
pp. 136-138 ◽  
Author(s):  
David W. Haley ◽  
Jennifer Cordick ◽  
Sarah Mackrell ◽  
Immaculate Antony ◽  
Maireanne Ryan-Harrison
Keyword(s):  
Stress Response ◽  
Stress Hormones ◽  
Stressful Events ◽  
Control Group ◽  
Stressful Event ◽  
First Year ◽  
Human Infants ◽  
Future Challenges ◽  
First Year Of Life ◽  
Pituitary Adrenal Axis

In humans, anticipatory stress involves activation of the limbic–hypothalamic–pituitary–adrenal axis, which releases stress hormones such as cortisol in response to an impending stressor. Conditioning of the stress response to anticipate and prepare for future challenges is a hallmark of adaptation. It is unknown whether human infants in the first year of life have developed the neural circuitry to support the anticipation of stressful events in an attachment context. Here, we show that human infants at six months of age produce an anticipatory stress response, as indicated by the release of stress hormones, when re-exposed after 24 h to a context in which they demonstrated a stress response to a disruption in the parent–infant relationship. Although infant stress response (cortisol elevation) was greater to the stressful event (parent unresponsiveness) than to the second exposure to the stress context (room, chair, presence of parent and experimenter, etc.), it was greater in the stress group than in the control group on both days. Results suggest that human infants have the capacity to produce an anticipatory stress response that is based on expectations about how their parents will treat them in a specific context.

scholarly journals Distribution ofStreptococcus mitisbiovar 1 phenotypes on shedding and non-shedding oral surfaces of human infants during the first year of life

2005 ◽  
Vol 17 (3) ◽  
pp. 138-145 ◽  
Author(s):  
Jennifer L. Kirchherr ◽  
George H. Bowden ◽  
Dorothy A. Richmond ◽  
Michael J. Sheridan ◽  
Katherine A. Wirth ◽  
...  
Keyword(s):  
First Year ◽  
Human Infants ◽  
First Year Of Life

scholarly journals Evidence of tutoring in the development of subsong in newly-fledged Meyer's Parrots Poicephalus meyeri

2004 ◽  
Vol 76 (2) ◽  
pp. 231-236 ◽  
Author(s):  
Simone Masin ◽  
Renato Massa ◽  
Luciana Bottoni
Keyword(s):  
First Year ◽  
Zebra Finches ◽  
Data Support ◽  
Wide Range ◽  
Poephila Guttata ◽  
Time Parameters ◽  
First Year Of Life

Subsongs are vocal trials uttered by young birds to practice songs. Among songbirds, subsongs are displayed by individuals in their first year of life. Studies on Zebra Finches Poephila guttata suggest that the juveniles learn their songs from a vocal tutor, their father. In this study we examine the subsongs in six captive-born Meyer's Parrots Poicephalus meyeri, from fledging time to weaning. Recordings of songs from chicks and fathers were analyzed for similarities in frequency and time parameters. With age, the subsongs of the chicks became more similar to the vocalizations of the fathers with 20% similarity rating in the first week after fledging to 100% at weaning time. Moreover, fledged chicks were exposed to a wide range of stimuli from several species of parrots breeding pairs caged nearby but chicks exclusively learned their fathers' songs. Our data support the hypothesis that Meyer's Parrots are vocal learners and use their father as their tutor.

The Emergence of Intentional Communication in Ontogeny, Phylogeny, and Pathology

1997 ◽  
Vol 2 (3) ◽  
pp. 216-225 ◽  
Author(s):  
Luigia Camaioni
Keyword(s):  
Children With Autism ◽  
First Year ◽  
Gestural Communication ◽  
Human Infants ◽  
Intentional Communication ◽  
Communicative Development ◽  
Language And Social Interaction ◽  
First Year Of Life ◽  
Special Case

The emergence of intentional gestural communication around the end of the first year of life is widely recognized as a basic milestone in the infant's communicative development. Two types of comparison are carried out in this paper. The first comparison concerns the gestural communication of human infants and of our nearest primate relatives, the apes, and especially the well-studied chimpanzees. The second comparison considers a special case of gestural communication, namely children with autism, who fail to develop some important forms of communication, language, and social interaction that normal infants develop in the first 2 years of life. In seeking to explain the patterns of similarities and differences derived from these two comparisons, the possible role of several developmental processes will be considered and evaluated: social sensitivity, sensitivity to eye contact and gaze, understanding of agency, and understanding of subjectivity.

MYOTATIC REFLEX DEVELOPMENT OF HUMAN INFANTS DURING THE FIRST YEAR OF LIFE

1994 ◽  
Vol 6 (4) ◽  
pp. 210
Author(s):  
Matsumoto Tamaki ◽  
Porcella Sandra ◽  
T. Leonard Charles
Keyword(s):  
First Year ◽  
Human Infants ◽  
First Year Of Life

Transition from dynamically maintained to relaxed end-expiratory volume in human infants

1989 ◽  
Vol 67 (5) ◽  
pp. 2107-2111 ◽  
Author(s):  
A. A. Colin ◽  
M. E. Wohl ◽  
J. Mead ◽  
F. A. Ratjen ◽  
G. Glass ◽  
...  
Keyword(s):  
Chest Wall ◽  
Mechanical Characteristics ◽  
Newborn Infants ◽  
Respiratory Pattern ◽  
First Year ◽  
Flow Volume ◽  
Volume Changes ◽  
Human Infants ◽  
Healthy Infants ◽  
First Year Of Life

Newborn infants, in contrast to adults, dynamically maintain end-expiratory lung volume (EEV) above relaxation volume. The purpose of this study was to determine at what age children develop a breathing strategy that is relaxed, i.e., determined by the mechanical characteristics of the lung and chest wall. Forty studies were performed in 27 healthy infants and children aged 1 mo to 8 yr during natural sleep. Volume changes were recorded with the use of respiratory inductance plethysmography (RIP). The volume signal was differentiated to yield flow. Flow-volume representations were generated for a random sample of the recorded breaths to determine the predominant breathing strategy utilized, i.e., relaxed, interrupted, or indeterminate. The respiratory pattern was predominantly interrupted below 6 mo of age and predominantly relaxed over 1 yr of age. Mixed patterns were observed in children 6-12 mo of age. The number of breaths that could not be classified (indeterminate) decreased with age. Respiratory frequency measured from the sample of breaths decreased with age and was accompanied by an increase in expiratory time. We conclude that a relaxed EEV develops at the end of the first year of life and may be related to changes in the mechanical properties of the chest wall associated with growth as well as changes in respiratory timing.

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