The study focuses on the correlations existing between the conceptual properties of the modalities of visual and auditory perception and the semantic-syntactic behavior of the verbs of perception ver/voir, oír/entendre, mirar/regarder, and escuchar/écouter. In part one of the book, the author argues that visual perception and auditory perception differ in terms of extra-linguistic criteria. Part two draws upon empirical material to advance syntactic evidence for a connection between the cognitive features of visual and auditory perception and the syntactic behavior of verbs expressing such perception.