I think it is pretty well established that working visual memory is not the same thing as working verbal memory. The brain thinks with working memory, of which it has verbal and visual. The brain recalls data with long term memory, of which it also has verbal and visual. It is extremely widely accepted in psychology and neuroscience that humans can think in pictures and/or in language, and nobody in the field thinks that thought is limited entirely to language. www.simplypsychology.org/working%20memory.html