Production of Consonants by Prelinguistically Deaf Children with Cochlear Implants

Tne November 2007 issue of Clinical Linguistics & Phonetics includes an article that explores "consonant production following the sensory restoration of audition":

Spontaneous speech productions in 22 prelinguistically deaf French children who received cochlear implants were recorded at 6, 12, and 18 months post-surgery and consonant inventories were derived from both glossable and non-glossable phones using two acquisition criteria. The results showed that children initiated appropriate production of consonants after six months of implant use. Stops and labials were the most frequently produced speech sounds, whereas glides and palatals were still infrequent after 18 months.