A number of things may be said in explanation of somnambulism.
All of this may seem less if you are unable to learn exact pronunciation of Somnambulism, so we have embedded mp3 recording of native Englishman, simply click on speaker icon and listen how English speaking people pronounce Somnambulism.
Kids are more likely to sleepwalk than adults, with the peak prevalence of sleepwalking occurring at age 10.