Introduction to Sensation and Perception

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Flashcards on Introduction to Sensation and Perception, created by lauradavies94 on 07/04/2014.
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Flashcards by lauradavies94, updated more than 1 year ago
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Fundamental Paradigm When an idea of the world changes fundamentally from A to B
The mind and the brain is an information processing machine
The brain and the sensory systems are The origins of all mental events
Sensory channels are thought of as Data filters
Psychology is the study of the human mind and its functions, especially those affecting behaviour
Perception is a conscious sensory experience of high-level processing, usually related to activity in the cortex
Sensation is an automatic and unaware collection of low-level information
Sensation and perception are difficult to separate
Both the sensory system and perception are essential for an autonomous agent to survive
Senses allow us to Collect and interpret sensory information in order to perceive the world and build a representation, and perform daily actions based on this perception
Performing actions based on perception is done effortlessly on a day to day basis which is why perception is so important
E.g. eating an apple presence of the apple is recognised by the senses. We then recognise the concept which triggers a behavioural response of grasping and eating, or avoiding if it's rotten. Evolution arguably shaped these systems to make them efficient or reliable
Perception can be described as the window between the physical world and the mental state
We are surrounded by the outside world but what we really experience is inside our mental state
Our senses act as a channel to collect information
Information processing converts the world into internal events
sensation and perception are the starting points for higher cognitive processes in a network of information processing
Higher cognitive processes are attention, memory and thinking which leads to behaviour / action
Attention helps us to select important sensory information which is then passed to the memory. We then think about it which leads to the control or action of behaviour
Attention does influence what we perceive. Therefore our perceptions are biased by what we know.
Psychologists are divided over how much perception relies on the information present in the stimulus
Bottom-up processing Stimulus information arrives from sensory receptors (the bottom of information processing)
Top-down processing Stimulus information arrives from contextual information. This helps to organise the perceived stimulus using memory and knowledge
Example of top-down processing Reading difficult handwriting is easier in a sentence than isolated words. This is because the meaning of surrounding words provide context to aid understanding
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