Error in Text. In the Observation by Striano et al titled “Periodic Myoclonus Due to Cytomegalovirus Encephalitis in a Patient With Good Syndrome,” published in the February issue of the ARCHIVES (2007;64:277-279), there was an error on page 278. The sentence should have read as follows: “Jerk-locked averaging analysis did not show a cortical correlate for electromyographic discharges, and there was no spreading of jerks from the proximal to distal muscles; conduction velocity did not correspond to pyramidal conduction, suggesting a subcortical rather than cortical origin for the myoclonus.” We regret the error.