<span>Dr. Stott is researching epigenetics. Epigenetics is the study of changes that occur in gene expression with no changes in the actual gene sequences. Environmental factors can influence gene expression without changing the DNA sequence, making this the study of epigenetics.</span>
Difficulty in swallowing can be found in a patient with damaged cranial nerve IX or glossopharyngeal nerve. The nerve is located in brain stem near the other cranial nerve. Glossopharyngeal nerve has a role in the sensory and motoric of the pharynx and tongue/glosus. Other cranial nerves like nervus V(trigeminal), X(vagus) and XII(hypoglossal) also have a few role in pharyngeal phase of swallowing.
