ACL 1.0 - 1.2
Tube feeding is usually required.
ACL 1.4
The person's ability to track happens at about the same time that swallowing does in ACL 1.4. Tracking and sitting up for at least 15 minutes can be used as the prerequisites for swallowing. The person is able to follow a sensory cue as it changes location. Visual and auditory tracking is accompanied by swallowing and sitting in a chair with total support of their head and trunk.