The main purpose of this study is to evaluate the visual angle and ambient illumination effects on
Language is one of the most important higher brain functions for humans. Using medical imaging techniques,
such as MRI, PET, MEG, EEG, and NIRS, scientists have been investigating how the brain processes and acquires
language. This special issue concerns the processing and acquisition of languages, and the investigations that apply
medical imaging techniques to functional brain imaging studies. Hence the purpose of this special issue is to collect
articles on studies of language processing and acquisition in humans utilizing medical imaging techniques. This special
issue will contribute to uncovering the mechanisms of language processing and acquisition, and also to clarifying some of
the questions concerning the clinical aspects of language deficits.