The boundaries of human perception refer to the limits and constraints on our ability to sense, interpret, and understand the world around us. Human perception is mediated by our sensory organs, including the eyes, ears, skin, nose, and tongue, which provide information about the external environment. However, these sensory systems have limitations. For example, our vision is limited to a specific range of wavelengths within the electromagnetic spectrum, and our hearing is limited to a particular range of frequencies. Our sense of touch is limited to the detection of physical contact and pressure within a certain range. Additionally, our sensory experiences are influenced by individual variations and perceptual biases. The concept of perceptual thresholds, such as the absolute threshold and the just noticeable difference, quantifies the minimum intensity or change in stimuli that can be detected by our senses. Beyond sensory limitations, human perception is also influenced by cognitive factors, including attention, memory, and context. Our perceptual experiences are shaped by our brains’ interpretation of sensory information, and our brains may fill in gaps or make assumptions based on prior knowledge. The boundaries of human perception are a subject of study in psychology and neuroscience, with researchers exploring perceptual illusions, multisensory integration, and the extent to which technology and training can expand our perceptual capabilities.