Editing Muscle memory (section)

=== Dysgraphia for the alphabet ===
Case study: 54-year-old man with known history of [[epilepsy]]
	
This patient was diagnosed with a pure form of [[dysgraphia]] of letters, meaning he had no other speech or reading impairments.<ref name="Kapur">{{cite journal |last1=Kapur |first1=N. |last2=Lawton |first2=N. F. |year=1983 |title=Dysgraphia for Letters: a Form of Motor Memory Deficit? |journal= Journal of Neurology, Neurosurgery & Psychiatry|volume=46 |issue=6 |pages=573–575 |doi=10.1136/jnnp.46.6.573 |pmid=6875593 |pmc=1027454 }}</ref> His impairment was specific to letters in the alphabet. He was able to copy letters from the alphabet, but he was not able to write these letters.<ref name = "Kapur" /> He had previously been rated average on the [[Wechsler Adult Intelligence Scale]]'s vocabulary subtest for writing ability comparative to his age before his diagnosis.<ref name="Kapur" /> His writing impairment consisted of difficulty remembering motor movements associated with the letters he was supposed to write.<ref name="Kapur" /> He was able to copy the letters, and also form images that were similar to the letters.<ref name="Kapur" /> This suggests that dysgraphia for letters is a deficit related to motor memory.<ref name="Kapur" /> Somehow there is a distinct process within the brain related to writing letters, which is dissociated from copying and drawing letter-like items.