What physiological outcome occurs in the expressive stage?

The physiological outcome that occurs in the expressive stage of communication is resonation of speech sounds. During this phase, the vocal tract acts as a resonating chamber, shaping the sound produced by the vocal cords as it travels through the throat, mouth, and nasal passages. This resonation is crucial for creating the distinct qualities and characteristics of speech sounds, allowing for the articulation of phonemes and the clarity of speech.

Resonation involves the manipulation of airflow and vocal fold vibration, which combine to produce the sounds that one hears when someone speaks. The way the oral and nasal cavities are configured during this process significantly affects the sounds produced, contributing to voice quality and richness. This stage emphasizes the physiological adjustments necessary to transform raw sound into recognizable speech, making it essential for effective communication.

The other choices relate to different aspects of the communication process. Sound waves generated refer to the initial production from the vocal cords, decoding of signals pertains to the interpretation of sounds by the brain, and auditory perception involves the reception and processing of sounds by the listener. While all are integral parts of communication, they do not specifically address the expressiveness and the resonating function of the vocal tract as it pertains to speech production.