Statistical learning Flashcards
1
Q
Regularities
A
-the world has regularities
-features (object/phonological
/categorical/sequential) tend to co-occur across space and time
2
Q
Statistical learning
A
- extraction of regularities in how features tend to co-occur over space and time
- with or without conscious awareness
- multiple time scales
3
Q
Segmenting auditory streams
A
- auditory input is a continuous stream
- infants have to learn where words start and end
- statistics of transition
- high vs low transition probability
- low transition is where word breaks are
- unconscious
4
Q
Saffran- segmenting audio streams
A
- listen to continuous stream
- some features co-occur mroe frequently
- show word and non-word
- babies pay more attention to novel (non) word
5
Q
Segmenting other temporal sequences
A
- visual shapes
- events in the world
- people segment sequences into events consistent with transition probabilities
- people tend to parse events similarly
6
Q
The brain learns temporal sequences
A
- monkeys view continuous stream of fractals in the same order
- then view in random order
- neurons that preferred one fractal also preferred ones that occurred close to it in time during learning
- temporal regularities are being coded into the brain by neural firing
7
Q
Brain learns category feature co-occurance
A
- computational model of cortical representation
- storage of probabilistic relation between concepts and their properties
- might not co-occur together but relate to similar features that co-occur
- similar perceptual categorization share similar representations in the brain (membership in category is graded)
8
Q
hippocampus and statistical learning
A
- damage to hippocampus leads to impaired semantic memory
- fMRI data:
- hippocampus engaged by temporal regulation
- responds to violations of temporal regulation
