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reflex must diminish for the proper development of fine motor abilities. Children who maintain the clutching reflex throughout toddlerhood rather than progressing to the“ precision grip” may encounter difficulties in holding a crayon, turning a page, or self-feeding at the appropriate developmental stage.
RPRs may be maintained for several reasons. Studies have found associations between traumatic delivery [ 62 ], adverse neonatal conditions [ 62 ], and recurrent ear infections in early childhood [ 46 ] with potential changes in a child ' s developmental trajectory. Infants that bypass developmental milestones, such as walking before crawling, may be more prone to RPRs, similar to infants not receiving sufficient“ tummy time.” Consequently, PRs can serve as an early and effective instrument for evaluating the integrity of the CNS of full-term neonates. Later in the first year of life, as the CNS matures, these responses become increasingly difficult to elicit, coinciding with the emergence of voluntary motor activity. RPRs are frequently observed in children with ADHD, autism, and cerebral palsy and may serve as early indicators of developmental delays or nervous system dysfunction. PRs are critical in neonatal and infant neurological assessment. A
sucking reflex that is ab sent or impaired serves as an indirect sign of neonatal neurological maturity. An aberrant sucking reflex, when accompanied by further symptoms of CNS involvement, indicates a potential malfunction of the basal ganglia or brainstem.
4. Conclusion
RPRs throughout early development and adulthood are linked to brain injury and neurobehavioral disorders. Their existence has also been noted in many childhood functional neurological disorders without identifiable neurological injury or pathology. We think that the manifestation of RPRs indicates the existence of a maturational delay, also evidenced by structural and functional nervous system, behavioural, and cognitive differences when compared to otherwise neurotypical children.
The preservation of PRs may serve as an early indicator of ASD, which, in conjunction with initial attentional indicators, could aid in delineating the developmental trajectory of the larger autism phenotype in infancy. This approach posits that minor deviations in the initial phases of development, such as with RPRs, may have detrimental cascading effects on subsequent motor function as well as various other functions, including social and communicative behaviour and object exploration.
With RPRs persisting longer than the typical developmental timeframe, they may impede maturation and diminish the brain ' s capacity to interpret sensory information efficiently. The continuation of PRs beyond the typical duration of 12 months disrupts further development.
In conclusion, we propose that ASDs are partially linked to delays in maturation rather than structural pathology or damage. We think that the existence of RPRs and the potential delays in or absence of developmental milestones may serve as the earliest indicators of developmental delays in children, especially those with ASD. Therefore, given the relative simplicity of examining basic reflexes by both parents and paediatricians, we propose that the persistence of these reflexes could serve as a potentially valuable indicator for advancing more effective early identification and screening methods.
REFERENCES For a full list of references, please email the Editor: editor @ atms. com. au
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