Lacey Lubenow, MOTR/L, CLC
Purpose: The tactile system is responsible for receiving information from the environment through touch. It’s important in keeping us safe through the detection of potentially dangerous stimuli such as hot, cold, or sharp objects.
Function: The tactile system is composed of receptors that detect pressure, temperature, vibration, and texture in our external environment. The tactile system works alongside the proprioceptive system to communicate with the brain through sensory receptors throughout the body.
Why it’s important: As mentioned previously, the tactile system serves a lot of purposes, but none more important than safety. Without the tactile system, the body would be at risk of harm through things like heat exposure when cooking or bathing or cold exposure when outside in the elements. It also serves the purpose of emotional attachment (think skin to skin after birth), body position, and feeding and nutrition.
System Breakdown: Because the tactile sensory system is so vast, children who have difficulty with tactile processing may present with a combination of over or under responsive tendencies. Children who are over-responsive to tactile input may be resistant to self care tasks like hair brushing/cutting, nail trimming, tooth brushing, or face washing. They may have a hard time feeding, which can lead to picky eating habits. Children also may avoid or dislike messy play such as finger painting, sand play, or playing with food. Resistance to certain textures of clothing, socks, difficulty with tags or seams, or tight clothing can also be a sign of tactile over-responsiveness. Children who are under-responsive to tactile input may seek out various textures and use parts of their body that have more touch receptors including lips, tongue, and face to feel them. They may not recognize tactile input as easily and thus have a lack of awareness of when their face or hands may be dirty. They also may appear to have a high pain tolerance and seek out messy play opportunities rather than avoid them. Similarly to other sensory systems (proprioceptive and vestibular) children may also engage in active or rough play like running, jumping, or crashing into things.
OT Intervention: Every person is unique to their sensory processing needs. It only warrants intervention if it prevents participation in meaningful activities and impacts their quality of life. Regardless, tactile input is beneficial for children with and without sensory impairments. A sedentary lifestyle restricts the opportunity for engaging the tactile system and can lead to sensory processing difficulty purely due to a lack of exposure. Our sensory systems require frequent input to process information efficiently and effectively. Occupational therapists assist with creating a ‘sensory diet’ that is unique to each child’s needs to help them better process sensory information and promote improved regulation. Examples of activities that OT’s may use to promote exposure to tactile input include:
Water Play: Water is a great way to engage the sensory system without the feeling of being too messy.
Brushing Protocol: The Wilbarger brushing protocol is often used by OT’s to assist with desensitization of the tactile system using a specific brush on the skin. It can decrease over-responsiveness to clothing, food, and self care like hair or tooth brushing.
Deep pressure: A powerful tool that not only helps with regulation of the proprioceptive system, but the tactile system as well.
Exposing children to various textures through play over time will assist in desensitization of an over-responsive tactile system. If a child is under-responsive, providing and educating them with safe sensory opportunities that allow them to feed their sensory system through rough or messy play is equally as important.
