2. Human (Input-Output Channels) Human Computer Interaction- Part 1

The Human, Explanation of the Human Vision. How do humans receive and process visual information when using computers? Welcome to Part 1 of our deep dive into the Human component of HCI — where we explore the human as an information processor, starting with the visual (vision) system. In this video, you’ll learn: The human as an information processor – perception, memory, response Input channels in humans: Vision, Hearing, Touch (focus on Vision in this part) Anatomy of the human eye (simplified for HCI): Cornea, pupil, lens, retina, rods & cones How visual perception works: Light detection Color vision (RGB cones) Peripheral vs foveal vision Key visual limitations that affect interface design: Visual acuity (sharpness) Color blindness (types: protanopia, deuteranopia) Afterimages, flicker, contrast sensitivity Implications for UI/UX design: Why color contrast matters (e.g. red/green buttons) Font size, spacing, and readability Avoiding visual clutter Designing for accessibility (WCAG guidelines) This video is Part 1 in our series on The Human in HCI, based on core principles from cognitive psychology and Norman’s Design of Everyday Things. Subscribe for upcoming parts: Part 2: Auditory (Hearing) Channel Part 3: Haptic (Touch) & Motor Response Watch the full HCI Playlist: https://www.youtube.com/watch?v=8MdKGt3-e_U&list=PLAXxt3X997Svz7NvipKEZOwiIOebmONg7&pp=gAQB #HCI #HumanComputerInteraction #CognitivePsychology #VisionInHCI #UIUXDesign #ComputerScience #HND #BSc #UXResearch #InputOutputChannels #HumanFactors #Accessibility #DesignForAll