Natalie, who is an 14 month old child struggle to sleep at the nap time every day. While others falling to sleep with soft music and tapping Natalie frequently show tantrums. The first year of life perceptual development rapid extremely. It is an aspect of cognitive development that help children to construct and comprehend sensory contribution. Sensory Integration is a Neurological development process that begins before birth and continue into adolescence. To produce proper motor activity, it is necessary to process sensory information often arrive from the different part of the body and types such as tactile, Visual, auditory and olfactory. This integration of sensory is a essential function in our nerve system. The article of "Sensory Processing" describe the sensory integration is a…show more content… What they discover in every experience (Action) will repeat and develop sensory assimilation. According to the Article "Making sense of sensory integration/Effect of SI Challenges during different development Stages" panel of professionals discussed about different Sensory Integration problems in different ages/stages. This article is the series from the audiotape, available in PDF mode. In this Article there are 4 professional discussed as a question and answer format. According to the Stacey Szklut, MS,OTR "one of the first thing we might see in infancy is when a child has difficulty understanding body position and movement in space" . "Infants with regulatory disorders seem to have an inability to process many environmental and internal inputs and therefore cry very often and can look like they have colic". She described toddler who has great difficulty with sensory integration may tantrum very easily, while others naturally develop more skills. The child who has a regulatory disorder have complexity to staying calm in a