Social interaction is associated with changes in infants' motor activity

Attention-sensitive signalling by 7- to 20-month-old infants in a comparative perspective

Attention-sensitive signalling is the pragmatic skill of signallers who adjust the modality of their communicative signals to their recipient's attention state. This study provides the first comprehensive evidence for its onset and development in 7-to 20-month-olds human infants, and underlines its significance for language acquisition and evolutionary history. Mother-infant dyads (N = 30) were studied in naturalistic settings, sampled according to three developmental periods (in months); [7-10], [11-14], and [15-20]. Infant's signals were classified by dominant perceptible sensory modality and proportions compared according to their mother's visual attention, infant-directed speech and tactile contact. Maternal visual attention and infant-directed speech were influential on the onset and steepness of infants' communicative adjustments. The ability to inhibit silent-visual signals towards visually inattentive mothers (unimodal adjustment) predated the ability to deploy audible-or-contact signals in this case (cross-modal adjustment). Maternal scaffolding of infant's early pragmatic skills through her infant-directed speech operates on the facilitation of infant's unimodal adjustment, the preference for oral over gestural signals, and the audio-visual combinations of signals. Additionally, breakdowns in maternal visual attention are associated with increased use of the audible-oral modality/channel. The evolutionary role of the sharing of attentional resources between parents and infants into the emergence of modern language is discussed.

Patterns of attention-sensitive communication contribute to 7-20-month-olds' emerging pragmatic skills

The present study aimed at investigating the ability of 7- to 20-month-old infants to display attention-sensitive communication using either canonical markers of language acquisition (e.g., pointing gestures, canonical babblings) or other signals based on the physical features actually perceived by the mother in everyday interaction (e.g., body movements, mouth sounds). We studied 30 French mother-infant dyads in naturalistic settings. We assessed the infants' attention-sensitive communication through unimodal and cross-modal adjustment, defined as the capacity of infants to address visually inattentive mothers by avoiding visual communication mismatches and/or favoring communication matches through audible-or-contact signals. Unimodal and cross-modal adjustments were tested for specific signals across spontaneous "conditions" of maternal visual attention (attentive/inattentive) from video footage filmed in the home. Both canonical markers of language development and signals belonging to an extended repertoire of communication were used by infants to adjust to their mother's visual attention. Gaze-coordinated signals were overall not significantly better adjusted to maternal attention than non-gaze-coordinated signals, except for specific silent-visual signals at certain ages. Overall, these results indicate that attention-sensitive communication is relevant to the development of early pragmatic skills and that the intentional use of signals may be more reliably approximated by this capacity than by gaze-coordination with signals.

Six-month-old infants' communication in a comparative perspective: Do maternal attention and interaction matter?

Developmental precursors of the prelinguistic transition from gestures to word use can be found in the early pragmatic usage of auditory and visual signals across contexts. This study examined whether 6-month-old infants are capable of attention-sensitive communication with their mother, that is, adjusting the sensory modality of their communicative signals to their mother's attention. Proxies of maternal attention implemented in experimental conditions were the mother's visual attention (attentive/inattentive), interaction directed at the infant (interactive/non-interactive), and distance (far/close). The infants' signals were coded as either visual or auditory, following an ethological coding. Infants adjusted the sensory modality of their communicative signals mostly to maternal interaction. More auditory signals were produced when the mother was non-interactive than when she was interactive. Interactive conditions were characterized by higher rates of visual signaling and of gaze-coordinated non-vocal oral sounds. The more time infants spent looking at their attentive mother, the more they produced auditory signals, specifically non-vocal oral sounds. These findings are discussed within the articulated frameworks of evolutionary developmental psychology and early pragmatics.

Neuromodulatory roles of PIPER GUINEENSE and honey against Lead-Induced neurotoxicity in social interactive behaviors and motor activities in rat models

Background

Piper guineense and honey contain antioxidative, anti-inflammatory, and antimicrobial properties that can help restore neuronal and other cell damage. To investigate the neuromodulatory roles of p. guineense and honey against lead toxicity on the hippocampus and cerebellum, impairing social behaviors and motor activities.

Methodology

Thirty Wistar rats were separated into six groups of five rats each, marked with dye. Group A served as control; B was untreated lead; C was a medium dose of the extract (50 mg/kg) and honey (1000 mg/kg); D was a high dose of the extract (80 mg/kg) and honey (1500 mg/kg); E received extract (80 mg/kg), and F received honey (1500 mg/kg). All groups received 110 mg/kg of lead orally, except the control. Social interaction, antidepressant effects, and motor activities were studied using a sociability chamber (SC), Forced Swim Test (FST), and String methods. A blood sample was used to evaluate glutathione peroxidase (GPx) and glutathione oxide transaminase (GOT), while the lipid level was estimated using cerebellar homogenate. Neuronal damage, vacuolation, necrosis, cell degeneration, and alterations in both hippocampus and cerebellum marked untreated group, with decreased GPx and GOT activities followed by impaired motor activities, social behavior, memory, and motivation. Using SCT, group B spent significantly lesser time (47.60 ± 47.60) with stranger 1 compared to A (138.20 ± 34.05), while group C spent considerably more time with stranger 1 (86.80 ± 30.32) than group B at P ≥ 0.05. The treatment increased the enzyme level and restored histoarchitecture (Figures 1-12), improving motor activities, social behavior, memory, motivation, and social affiliation (Tables 3, 4, 2, and 6). The extract and honey may be helpful as neuromodulators in lead toxicity in a dose-dependent manner.

Longitudinal changes in infants' rhythmic arm movements during rattle-shaking play with mothers

From early on, infants produce a variety of rhythmic behaviors-an ability that likely supports later social communication. However, it is unclear, how this rhythmic motor production changes with age. Here, we investigated the coupling between infants' arm movements across the first year of life in a social context of a rattle-shaking play with their mothers. Through longitudinal measurements at 4, 6, 9, and 12 months of age using wearable motion trackers placed on infants' arms, we show that infants (N = 40) are similarly motivated to attempt rattle-shaking across the first year of life. However, with age, they make more rattling movements with an increased frequency. Their left and right arm movements become more coupled during rattle-shaking, as shown by an increase in wavelet coherence. Infants produced more rattling movements when they were rattling alone than when their mothers were rattling or singing simultaneously. There were no differences between infants' individual and social rattling in between-arms coherence. Our results may help to understand rhythmic arm movements as precursors of motor social coordination.

Quality of life and neuropsychomotor development of infants between 4-18 months in daycare center

Quality of Life (QoL) is a predictor of development depending on multiple factors, being the QoL of infants still little studied, especially in permanent settings such as infants educational center or daycare centers. Correlate quality of life with age, family income and the neuropsychomotor development of infants between 4 and 18 months of age in daycare centers. Descriptive transverse study research, with clinical trials registration : RBR 2hd6sm on November 2, 2016. Quality of life was evaluated with interviews with the family through Pediatric Quality of Life Inventory-PedsQL™ (Brazilian version). The infants were evaluated in a playful way, through the use of Alberta Infant Motor Scale (AIMS) and Denver II test . 88 infants participated in the study. The infants evaluated had a good quality of life, with scores above 64%. AIMS presented the correlation with for physical functioning and total score of QoL. QoL of infants from 4 to 18 months of age is correlated with their neuropsychomotor development, which suggests the need for investigations between this theme and daycare centers.

Characterization of neuropsychomotor and language development of children receiving care from groups at an extended Family Health Care Center: an interprofessional approach

ABSTRACT Purpose: to characterize the language and neuropsychomotor development of children referred for speech-language-hearing and physical therapy at an Extended Family Health Care Center (NASF) in Paranaguá, Paraná, Brazil. Methods: 36 children aged 3 to 13 (7.9 ± 2.3) years were assessed through anamnesis, speech-language-hearing assessment with a flipchart, and motor development scale (MDS). The analysis was made with the two-tailed Pearson correlation test. Results: 69% had no initial clinical diagnosis; 83% were referred by their school, due to suspected language difficulties (92%), which were confirmed. Children both at risk and with psychomotor delays represented 69% of the sample; 78% of the children had learning difficulties and overall motor age 16 months below their chronological age, on average. The psychomotor areas with the worst scores for motor age and motor quotient were temporal organization, body scheme, and spatial organization. School difficulties were related to delays in motor age (p = 0.03), MDS psychomotor profile classification (p = 0.01), overall motor quotient (p = 0.04), and psychomotor diagnosis (p = 0.001). Conclusion: it is concluded that children both at risk and with psychomotor delays pose a great demand. Most of them present language delays, and have difficulties in other areas as well, confirming the need for health professionals’ multi- and interdisciplinary actions. NASF is an option for promoting follow-up and intervention.

Infants’ Motor Activity During a Mother–Infant Interaction Alternating Silent and Singing Phases

Infants interact with their caregivers, using visual contact, smiling, vocalizations, and motor activity. Most of the studies on infant motor activity during dyadic interaction provided qualitative microanalyses. Few documented changes in infants’ general motor activity when facing social stimuli, but the movement analyses were carried out over large time windows. Following on from a previous study, we sought to explore rapid variations in motor activity during an interaction between mothers and their 6-month-old infants. The interaction featured short alternating silent and singing phases. Results showed that infants’ head, hand, and foot motor activity was related to their mothers’ behavior. Head movements, in particular, decreased during the songs and increased between them. The interindividual variability was strong at the hand and foot level and a k-mean cluster analysis showed three different group tendencies. Head stillness certainly expressed the infants’ attentional engagement in the interaction. Hand and foot movements appeared to be more variable and, at the foot level, presumably depended on the mother–infant communicative routines. Infants’ general motor activity could be an indicator of the infant’s engagement and reflect the dyad’s communicative routines during interactions.

Neuropsychomotor development assessment of children aged 0 to 5 in early childhood public education centers

ABSTRACT Purpose: to investigate the neuropsychomotor development, as well as nutritional and cognitive/emotional aspects of children aged 0 to 5, attending early childhood education centers, aiming at early identification and prevention of risks and delays in children’s development. Methods: the population studied was composed of 85 children attending two early childhood education centers. The children’s development approach was contextual, by means of ludic physical therapy assessment, by using the DENVER II scale; complementary assessments of their nutritional status were also performed, based on anthropometric measurements of weight and height, as well as evaluations of the cognitive/emotional development aspects through the Free Hand Drawing and Human Figure Drawing Tests. Results: neuropsychomotor development was found to be within normal range in 69.41% of the children and questionable in 30.58% of them. The significant variable affecting the result was found to be the class in which some children were inserted. In the scale utilized, the best performance was considered to be the gross motor skills (7.69%) and the most questionable performance occurred in the language skills (58.85%). As for nutritional data, it was discovered that 27.06% of the children had some nutritional risk, 22.35% had obesity risk and 4.71%, malnutrition risk. In the cognitive/emotional analysis, the result was that 34.37% of the children presented signs of difficulties related to adaptation and socialization or self-esteem. Conclusion: in the present study, about one-third of the children participating presented questionable neuropsychomotor development, especially in the field of language; in this regard, the class to which the children belong may constitute a barrier to their development. These children presented nutritional risks, with a tendency towards obesity, as well as the possible difficulties regarding adaptation and socialization or self-esteem.

Intergenerational transmission of traumatization: Theoretical framework and implications for prevention

Intergenerational transmission of traumatization (ITT) occurs when traumatized parents have offspring with increased risk for emotional and behavioral problems. Although fetal exposure to the maternal biological milieu is known to be one factor in ITT, PTSD-driven parent-child interactions represent an additional important and potentially modifiable contributor. The Perinatal Interactional Model of ITT presented herein proposes that PTSD leads to social learning and suboptimal parent-child interactions, which undermine child regulatory capacity and increase distress, largely explaining poor social-emotional outcomes for offspring of parents with PTSD. Psychosocial intervention, particularly when delivered early in pregnancy, holds the possibility of disrupting ITT.

Parental practices and beliefs on motor development in the first year of life

Abstract Introduction: In the child’s first year of life, motor development is critical for the other areas of child development. Beliefs and parenting practices influence the parents’ care and encouragement of their children, reflecting in their motor development; however, the Brazilian literature on this subject is scarce. Objective: to characterize the parental practices and beliefs associated with motor development in the first year of life; and to verify if practices and beliefs are interrelated. Methods: Two questionnaires were developed and applied, one about parenting practices and the other about parental beliefs on motor development in the first year life, to 27 caregivers of children between 12 and 24 months of age, who participated in an aquatic stimulation program. The agreement between practices and beliefs was verified by a graphical method, based on the transformation of ordinal scores to an interval scale using Rasch analysis. Results: The participants had higher levels of education and economic status. They reported a variety of practices focused on the motor development of their children, such as family interaction through playing, toy offers, lap time and free movement space. Conclusion: Most of the practices were based on parental beliefs, for some activities, however, beliefs and practices diverged, demonstrating the complexity inherent to the formation of parental beliefs.