Cognitive Functioning:These are mental processes that help us gather knowledge and comprehend it. They include reasoning ability, memory retention, attention span etc.
Motor Functioning: These are controlled by various structures in our nervous system which coordinate together to perform all types of movements.
Sensory Functioning: These involve five senses (sight, hearing, smell taste touch) which provide data for perception- our conscious awareness of world around us based on sensory input from body's receptors.