A cognitive process which starts with simple processes & builds up to the more complex higher levels.
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Describe receptive field
Area of within which it's possible for a visual stimulus to influence the firing of neuron. Ganglion on cells respond when light strikes retina, light hyperpolarizes photoreceptors exciting the bipolar cell which excites ganglion cell only if bipolar neig
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Describe a simple cortical cell
3 adjacent LGN neurons feed cortical cell, when
all 3 centres are stimulated cortical cell fires.
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Describe hypercolumns (complex cells)
Similar to simple but have larger receptive fields, some are direction selective, many are binocular, organised into 6 layers, orientation preference organised by column.
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What is top-down processing?
A way of explaining a cognitive process in which higher-level processes such as prior knowledge influence the processing of lower-level input.
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What is predictive processing?
Driven by bottom-up features, predictive coding, recurrent cascade of top-down predictions, avoids the need to process huge amounts of info.
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Card 2
Front
Describe receptive field
Back
Area of within which it's possible for a visual stimulus to influence the firing of neuron. Ganglion on cells respond when light strikes retina, light hyperpolarizes photoreceptors exciting the bipolar cell which excites ganglion cell only if bipolar neig
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