Sensory System Visual System and Visual Pathways PDF
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This document provides a presentation on the sensory system, focusing specifically on the visual system and visual pathways. Diagrams and explanations of visual perception mechanisms are included, along with associated concepts like Gestalt laws of grouping and language relativism. It explores how factors like proximity, similarity, and closure influence visual perception.
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Sensory System Visual System and Visual Pathways Visual System The part of the central nervous system that is required for visual perception. Eye an organ that detects light waves. (Long, Medium and Short wavelengths) Plays a role in detecting visual information. Simplified...
Sensory System Visual System and Visual Pathways Visual System The part of the central nervous system that is required for visual perception. Eye an organ that detects light waves. (Long, Medium and Short wavelengths) Plays a role in detecting visual information. Simplified Layout of the Visual Pathway Retina Cornea Pupil Retina Lens (Rods or (Bipolar cells) Cones) Retina Primary Visual LGN Optic Nerves (Ganglion Cortex (Thalamus) Cells) Visual Perception Gestalt Laws Of Grouping Set of Shortcut the mind uses to group small objects into larger ones Play an important role in visual perception. Principles are the Following: Proximity Similarity Closure Good Continuation Common Faith Good form Proximity When object is close together, the mind sees them as a single group of object Similarity This states that, When an object is similar can be classified into one group Closure Our minds tend to complete the figure even if picture is partially complete or hidden by other objects Good continuation When Object intersect, We perceived them as objects rather than a single object. Common Fate We can perceive a visual stimulus as part of the same overall object once they are moving in the same direction. Good form Tendency of our mind to perceive simplest way possible Factors affecting Visual Perception Visual context/ Arrangement Expectation Language Relativism Language we speak constrains our perception. Example, If language doesn’t have color green, Then you cannot see color Green Desire Impacts perception Thirsty people can people can perceive a water source as closer to them compared to quenched people.
