Sensation and Perception (W7)
- Created by: HannahSusanRussell
- Created on: 09-04-20 20:29
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- Sensation & Perception
- Perception (the detection of stimulus)
- Perceive shapes, distance, depth, movements etc.
- Adjacency / Proximity Principle : Elements close together belong together
- Similarity Principle : Elements that look similar will be seen as the same form
- Good Continuation - predictability of incomplete figures/shapes
- Gesalt FORM perception
- Adjacency / Proximity Principle : Elements close together belong together
- Similarity Principle : Elements that look similar will be seen as the same form
- Good Continuation - predictability of incomplete figures/shapes
- Gesalt FORM perception
- Similarity Principle : Elements that look similar will be seen as the same form
- Adjacency / Proximity Principle : Elements close together belong together
- Similarity Principle : Elements that look similar will be seen as the same form
- Bottom Up Processing : beginning at the retina, then interpreted
- Top Down Processing : Context of the brain, then fed down to sight perception
- FACE Perception
- Usually distinguish male and female through eyes, mouth and nose as a collective, but rarely alone
- Lighting and Contour significantly influence recognition
- Perception of Space and Motion
- Depth perception comes from binocolular (retinal disparity) and monocular cues (size, texture, shading)
- The brightness of an object relies on shadowing and light on objects surrounding
- A saccade allows for the whole image to take in - eg: panoramic view
- Brain Mechanisms
- Visual Agnosia is the inability to perceive objects accurately
- Prognosia is the inability to identify faces form bilateral or unilateral posterior brain damage
- Agnosia deficits may be due to impaired ventral streams
- Blindsight is the visual ability to preform visual tasks despite a lack of awareness (due to damage outside the primary visual cortex)
- Spatial neglect is the inability to attend to stimuli in one half of space (usually the left hand side due to right parietotemporal cortex damage)
- Visual Agnosia is the inability to perceive objects accurately
- Sensation (the properties of stimulus)
- Vision
- Audition
- Gustation
- Olfaction
- Somatosation
- Temperature
- Vibration
- Pain
- Stretch
- Pain
- Vibration
- Temperature
- Somatosation
- Moleculer
- Olfaction
- Somatosation
- Temperature
- Vibration
- Pain
- Stretch
- Pain
- Vibration
- Temperature
- Somatosation
- Olfaction
- Olfaction
- Mechanical
- Gustation
- Radiant
- Audition
- Sensory Organs
- Vision
- Audition
- Gustation
- Moleculer
- Moleculer
- Mechanical
- Gustation
- Radiant
- Audition
- Functional Validation - The training of the sensory systems
- Vision
- Transduction : converts sensory input to neural activity for the brain to analyse
- Sensory Organs take in sensory info via stimulus
- Neural impulse carries ACTION POTENTIAL via axons to the sensory nerves
- Transmitting stimulus into the brain in a converted matter
- The brain then analyses
- Transmitting stimulus into the brain in a converted matter
- Stimulus energy transacted into activity of receptors (specialist neurons)
- Neural impulse carries ACTION POTENTIAL via axons to the sensory nerves
- Transmitting stimulus into the brain in a converted matter
- The brain then analyses
- Transmitting stimulus into the brain in a converted matter
- Information is transmitted by means of two coding schemes
- Anatomical (Location & Type) & Temporal (time)
- Sensory Coding
- Information is transmitted by means of two coding schemes
- Anatomical (Location & Type) & Temporal (time)
- Sensory Coding
- Stimulus energy transacted into activity of receptors (specialist neurons)
- Stimulus energy transacted into activity of receptors (specialist neurons)
- Sensory Coding
- Anatomical (Location & Type) & Temporal (time)
- Information is transmitted by means of two coding schemes
- Sensory Coding
- Anatomical (Location & Type) & Temporal (time)
- Neural impulse carries ACTION POTENTIAL via axons to the sensory nerves
- Neural impulse carries ACTION POTENTIAL via axons to the sensory nerves
- Most senses need receptor cells to translate and transport
- Somatosences are received by dendrites directly.
- Sensory Organs take in sensory info via stimulus
- Response Bias
- Signal Detection (threshold not perception)
- Vision
- Perception (the detection of stimulus)
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