Lecture 12- Attention schemas Flashcards
What is simulation semantics?
Activating the same parts of the brain that the meaning is about
What are three pieces of evidence for simulation semantics?
- Neuro-imaging indicates overlap
- Visual imagery experiments (words/ sentences activate the visual cortex)
- Sentence-Action Compatibility (Actions of the arm can either inhibit or aid with reading sentences)
What are three things that are hard to explain using simulation semantics?
- Variation (no action is the same across time)
- Lack of experience yet still has meaning
- Abstract language (if not about physical things how would stimulating physical things work)
What is a solution to the problem of variation in regards to simulation semantics?
Schemas which are simplified models of topics (core elements are kept but details are thrown away e.g. container). As generalised allows for variation.
What do schema’s allow for?
Allows us to predict behaviours
What flaw in simulation semantics can schema’s also potentially explain?
Lack of experience but still having meaning. We can build a model/schema that lets us understand a general concept even if we have never experienced it.
How does a physical schema allow us to then understand something abstract?
Can apply the schema we already have to a more abstract idea.
What is the idea of attention?
The world is made up of many things/ lots of stimulation. Attention is the idea of selecting one thing for greater processing i.e devote more neural and mental energy to this thing.
How does attention work at the neural level?
- Neural signals can either be excitatory or inhibitory
- Attention boosts neural signals related to the thing you are attending to more and inhibits the signals related to other things
How does attention work with regards to information transfer?
Increases the channel for information transfer sending more information to the ‘decision maker’ of the brain (part trying to use the information related to what you are attending to)
How does attention work via top-down processing?
Signals are sent down to change the perception of the world
What types of things can we attend to?
Vision, sounds, taste even thoughts (doesn’t have to outside of yourself)
Can attention shift? What does this mean?
Yes can make a decision to focus on different things. Means we have some control over what we decide to pay attention to.
How is behaviour altered by attention?
What we decide to pay attention to influences our behaviour.
What is in an attention schema?
- An agent in place 1
- Attends to thing in place 2
- An attended thing will have a causal effect on agent
- Agent attends for some purpose