Psalm 137 reads:
If I forget you, Jerusalem,
may my right hand forget its skill.
May my tongue cling to the roof of my mouth
if I do not remember you,
if I do not consider Jerusalem
my highest joy.
Vaughan Bell dissects a short study on it. Researchers connected the familiar symptoms to earlier views about divine punishment:
Both right-sided paralysis and loss of expressive speech are clear symptoms of a stroke of the left middle cerebral artery, where the blood flow is blocked – leading to the death of the surrounding brain tissue, suggesting that the Psalm may be wishing these effects on people who forget the importance of Jerusalem. … But why these specific symptoms are mentioned may have more to do with ancient beliefs about stroke itself. The reason the condition is still called stroke is because people originally believed that it was a result of being ‘struck down’ by God.
The Dish 