History & Methods
8 important questions on History & Methods
What are the benefits of cognitive neuroscience?
2. It can address new questions e.g. Where are cognitive functions localised? When do different processes happen? How do different brain areas interact during recognition?
What are 2 limitations of cognitive neuroscience?
2. neuroscientific techniques often simply confirm existing theories rather than generating new ones
What is a benefit of computational cognitive science?
- Higher grades + faster learning
- Never study anything twice
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What are the two systems in computational cognitive science?
Connectionist Networks - information is distributed across the cognitive systems
What is the production systems?
Characteristics
1. Numerous IF...THEN rules held in long-term memory
2. A working memory to hold information
3. Operates by matching content of working memory to IF parts of rules, and then executing THEN parts
What is the connectionist network?
2. Nodes excite or inhibit each other
3. Each node produces an output if the input exceeds a threshold
= a pattern of activation
What are 4 limitations of computational cognitive science?
2. it is difficult to compare the two models as cognitive processes are so complicated
3. analogy with human brain is unconvincing i.e the brain has many neuron types, and no evidence of massive interconnection
4. don't take account of factors such as motivation or emotion
What is an example task of connectionism?
Proposed cognitive process:
- Input layers - excited by the incoming information (recognising the letter/ identifying what the letter is)
- Intermediate layers - more layers to allow the representation of more complex concepts
- Output layers - information that can be used to guide behaviour (associating concepts about that letter = the letter A is a vowel)
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