Confidence-based procedures, which use metacognitive indicators to determine whether subjects consciously perceive stimuli, are valid and accurate enough for practical and scientific purposes in consciousness research. This article reviews common objections to these procedures and concludes they are appropriate for assessing conscious perception.
A conscious being has a subjective point of view on the world and its own body, a concept easiest to grasp with vision, as Ernst Mach illustrated by drawing his own visual perspective. However, subjective experience encompasses far more than vision, including sounds, odors, tastes, and tactile sensations—a complete sensory world. The text argues that these sensory experiences constitute a full subjective point of view, extending beyond any single sense to shape a person's entire conscious experience of reality.