Ball T S, McCrady R E, Hart A D
Percept Mot Skills. 1975 Apr;40(2):619-22. doi: 10.2466/pms.1975.40.2.619.
A transistor radio activated by a mercury switch was used to reinforce head posture in two retarded children with severe cerebral palsy. Under the contingent music condition dropping the head forward automatically terminated the broadcast (music). A comparison of baseline and treatment phases showed that head orientation was strongly controlled by contingent music.
一个由汞开关激活的晶体管收音机被用于强化两名重度脑瘫智障儿童的头部姿势。在有条件的音乐情境下，头部向前下垂会自动终止广播（音乐）。基线期和治疗期的比较表明，头部姿势受有条件音乐的强烈控制。
