Sensory process perception Eesha Sharma MD Sense organs
- Slides: 29
Sensory process & perception Eesha Sharma, MD
Sense organs
Receptor potential Generator potential
Psychophysics • Gustav Theodor Fechner, 1860 • Quantitative relationship between physical stimuli and the sensations and perceptions they effect – Subject’s experience or behavior • Objectively measurable stimuli – Absolute thresholds – Discrimination thresholds – Scaling
Perception Sensation Apperception Experience
Perceptual processes • • Attention Form perception Visual depth perception Constancy Movement perception Plasticity Individual differences
Attention • The perceptual process that selects certain inputs for inclusion in our conscious experience, or awareness, at any given time
Filtering Serial processing Parallel processing Processing capacity
Form perception • Recognition of a figure on a ground
Contours
Organization • Gestalt: The whole is more than the sum of its parts • Laws of perceptual organization – Proximity – Similarity – Symmetry or good figure – Continuation – Closure
Visual depth perception • Monocular cues – Linear perspective – Clearness – Interposition – Shadows – Gradients of texture – Movement • Binocular cues – Retinal disparity
Constancy • Size constancy – Results when the object and its background change together in such a way that the relationship between them stays the same – Moon in the night sky • Brightness constancy – Result of unchanged brightness ratios
Movement perception • Real motion perception – Constancy: because of unchanged relationship between object and its background – The brain comparator • Apparent motion – Stroboscopic motion – Autokinetic effect – Induced movement
Plasticity • Visual deprivation – Sensitive period – Nature and nurture
Individual differences • Perceptual learning – An increase in the ability to extract information from the environment as a result of experience or practice with the stimulation coming from it – Ornithologists; Blind people • Set – Readiness or priming for certain kinds of sensory input • Motives and needs – Rorschach inkblots • Perceptual-cognitive style – Flexibility – Field dependence
- Sensory system organs
- Organs of the sensory system
- Sense organs
- Images of sense organs with names
- Sense organs for class 1
- Amphibian sense organs
- Ten sense organs
- Take care of sense organs
- Sense perception tok
- Narrow sense heritability vs broad sense heritability
- Narrow sense heritability vs broad sense heritability
- What affects perception
- Perception checking process
- Process of perception
- Consumer perception process
- Perception checking process
- Proximal vs distal
- Define perception checking
- The perception process
- Thermal noise is a wide sense stationary process.
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