In 1919, I published an essay that approached the subject of stammering from the standpoint of the psychophysiology of speech development and of speech production, and shortly after another in the same vein. During the ten or eleven years intervening, I have published nothing concerning this important problem. But in 1917, I began a series of investigations related to unsolved problems in the psychophysiology of the production of speech. These studies have thrown much light on the extraordinary complexities of the peripheral physiology of speech. On the basis of these psychophysiologic studies, I am able now to present an explanation of much of the extraordinary confused misdirection, overaction and tension so characteristic of the phenomena presented in stammering.
I first began to grasp the explanation of the disturbed psychophysiologic phenomena to be discussed about eight years ago. Since that time I have continued to work persistently
KENYON EL. PERIPHERAL PHYSICAL INHIBITION OF SPEECH: AN ESSENTIAL PHENOMENON AND AN IMPORTANT CAUSAL FACTOR OF STAMMERING (STUTTERING). Arch Otolaryngol. 1930;12(6):769–784. doi:10.1001/archotol.1930.03570010873007
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