Logging sheets will be placed at the infant's bedside to document the execution of sensory-based interventions, who conducted the intervention (parent, member of research team or other caregiver), infant responses and consequences of the intervention. Physiological (such as heart rate and oxygen saturation fluctuations), state (levels of arousal) and behavioral (such as crying, changes in motoric tone) responses will be recorded by caregivers during interventions on the bedside logs. Negative sequelae of the intervention will result in stopping the intervention and modifying the criteria for sensory-based interventions accordingly. A licensed therapist will provide guidance as to when infants can and cannot tolerate sensory exposures. From clinical documentation and bedside logging, implementation cost, penetration, and sustainability will be assessed. Nurses and parents will also be questioned to define caregiver perceptions and time commitment. At least 2 focus groups with health care professionals and parents of preterm infants will be conducted to assess perceptions and to incorporate feedback into the intervention plan. Adaptations to the model for an enhanced sensory environment will be made until it is deemed appropriate by the investigative team. This will occur when the model for an enhanced sensory environment can be documented through a minimum of 75% of hospitalization on at least 3 consecutive participants.