Psychology of Language Flashcards
What is language?
It is a system of communication
What is a key feature of language?
Motivation to share psychological states is key to language
What does not always require language?
Communication
What are key features of language?
Language :
- is universal
- comes in different forms/modalities
- is combinatorial, there is a relatively small inventory of basic elements e.g. few dozen speech sounds (phonemes)
What are linguistic symbols?
They are abstracted
What is the brain composed of?
Grey and white matter
What is grey matter?
It is neuronal cell bodies
What is white matter?
Axons, myelin, and glial cells
What is the cerebral cortex divided by?
It is divided by 2 hemispheres
What is each hemisphere in the cerebral cortex composed of?
Composed of 4 lobes;
frontal, parietal, temporal and occipital lobe
What does the “sylvian fissure” ( also called “lateral fissure”) do?
It divides the temporal lobe from the parietal and frontal lobe
What does each lobe have?
Each lobe has a characteristic set of gyri and sulci (folds of cortex)
What is the sulcus?
It is the crevis or inner part of the fold
What is the gyrus?
It is the outer part of the fold.
What are Brodmann areas?
They are the regions of the brain defined by layered composition of cells (cytoarchitecture)
Where is language centred in the brain?
Language is often left lateralised
What are the four main landmarks of functional neuroanatomy?
1 - auditory
2-action and motor control
3- planning, cognitive control
4- visual object recognition
What are the two general methods used to study brain behaviour relationships?
1- lesion method
2-neuroimaging
What is the lesion method?
The idea here is to look at patterns of deficits following brain damage, particularly associations between location of brain damage and the deficit patterns that result from the damage.
What is possible to create using virtual lesions?
we can temporarily disrupt processing in a particular brain area, which gives us precise control over the lesion location and an opportunity to test multiple lesion locations in a participant
What does neuroimaging involve?
Involves taking structural images (like x-rays) to show different kinds of brain tissue in different places.
What are examples of neuroimaging?
Voxel-based morphometry, lesion-symptom mapping, diffusion tensor imaging (white matter structure)
What is functional (or metabolic) imaging?
This is where we can track the compensatory flow of oxygenated blood as an indirect measure of which parts of the brain are engaged in a task.
How can electrical activity in the brain be recorded?
You can use EEG/MEG at the scalp or intracranial EEG in the case of neurosurgical patients
Who proposed the idea of forms, that concepts are metaphysical objects outside the human mind?
Plato
What are key concepts taken from Pluto’s idea?
Noting the difference between Prototypes and exemplars
What is an example of a prototype and exemplar?
Prototype - general concept of a chair
Exemplars - specific chairs encountered
What can concepts also be thought of as?
Concepts can be thought of as symbolic representations defined by a list of necessary and sufficient features.
What are concepts?
Concepts are a perceptual symbol system
What is simulation or re-enactment?
The process of perception and action features being activated during semantic cognition is called simulation or re-enactment
When can category-specific semantic deficits occur?
After a stroke when patients have a hard time with one particular conceptual category like animals
What is sensory-functional distinction?
It is when different categories rely on different features
e.g. animals and plants are primarily defined by sensory knowledge (colour, shape, taste etc.) whereas inanimate objects (e.g. tools) are defined more by their functions and associated actions
What categories will damage to action systems have a bigger effect on?
Categories that rely on action (e.g. tools)
What categories will damage to colour systems have a bigger effect on?
Categories that rely on colour (e.g. living things)
What does the Saphir-Whorf hypothesis propose?
Proposes that how we think is affected by the language we speak
What is lexical development focused on?
Lexical development is how kids learn words
How do children conquer this issue of understanding what sounds go with what meaning and what part of environment is relevant for this label?
The rely on multiple biases.
- One is whole object bias
- another is mutual exclusivity
- another is basic-level
How do kids identify verbs?
They use suffixes
What is syntactic bootstrapping?
Sentence structure gives some clues to verb meaning. -can also be uses for nonsense verbs
What is categorical perception?
That is we perceive speech sounds due to their categories without acoustic details
Speech perception is not just auditory. Humans use a variety of other info to supplement the acoustic info, especially context. What are two types of context.
1- visual context
2- lexical knowledge/context