It would be "c. Herman Ebbinghaus" who is <span>known for his use of nonsense syllables in his experiments on forgetting, since he felt that these registered differently in the brain. </span>
Herman Ebbinghaus was a German psychologist who was one of the first to study memory. In his research, he would use associations that were called "nonsense syllables". which is a consonant-vowel-consonant combination in which the consonant is not repeated and the syllable doesn't have prior meaning.