Evidence from signal processing and medical imaging confirms that sampling rates below the Nyquist threshold lead to signal aliasing and reconstruction artifacts.
The retrieved papers provide consistent empirical and theoretical support for the claim regarding the Nyquist rate and the consequences of undersampling (aliasing and artifacts). Papers [0], [2], and [6] specifically discuss avoiding aliased mixing, applying the Nyquist-Shannon theorem to prevent data distortion, and the emergence of sampling artifacts when angular limits are violated.