The intersection of Virtual Reality (VR) and Altered States of Consciousness (ASCs) represents a notable research domain in experimental and clinical contexts, highlighting the growing interest in how immersive technologies can induce, modulate, and assess non-ordinary cognitive and emotional states. This study examines literature from 2014 to 2024, providing a review of the methodological frameworks and evaluation strategies used in examining VR-induced ASCs. Four primary methodological fields have been analyzed: (1) clinical and therapeutic research, (2) cognitive science and neurophysiology, (3) immersive technology and Human-Computer Interaction (HCI), and (4) psychological and phenomenological evaluation. Research indicates that VR-mediated ASCs can be systematically evaluated through multimodal techniques. The review reveals significant methodological inconsistencies, highlighting the lack of standardization in experimental designs, variability in measurement tools, and limited interdisciplinary integration. The review highlights the need for a standardized methodological framework that allows for replicable assessment of VR induced ASCs.