[1] Tsunoda further argues that brains use languages as operating systems, thus the user "giving meaning to vowels."
Tsunoda has had one essay, "An approach to an integrated sensorimotor system in the human central brain and a subconscious computer", included in a prestigious British publication, Sociocultural Studies of Mind (1995), edited by James V. Wertsch, Pablo del Rio, and Amelia Alvarez.
[2] Journalist Karel van Wolferen has written of Tsunoda that "his testing methods are highly suspect.
In a 1991 paper in JALT journal, linguist Thomas Scovel writes: "A major criticism of Tsunoda's neurolinguistic work is replicability.
Uyehara and Cooper (1980) and Hatta and Diamond (1981) have replicated Tsunoda's experiments and have found no differences in the way Japanese and non-Japanese speakers process sounds in their cerebral hemispheres.