Attention Language And Lateralization Of The Brain Flashcards
Explain contralateral control
Left hemisphere controls right side of the body
Right hemisphere controls left side of the body
Explain the flow of auditory connections
Ear - cochlea nucleus (crossover) - primary auditory cortex
Explain visual connections
Left visual field (crossover at optic chiasm) to right hemisphere and vice versa
How do we see objects in both eyes?
Different Neurons are activated in retina depending on the incoming angle
Optic chiasm
Lateralization - certain processes are more highly developed on one side of the brain than the other. What is the left hemisphere good for and right?
Left hemisphere dominance - specialised for language
Right hemisphere dominance - specialised in emotional content
What’s does ornstein (1977) say?
Left is specialised in details
Right is specialised in global patterns
What’s the valence hypothesis?
Right hemisphere is dominant for negative emotions the left dominant for positive emotions (Davidson lateralization of emotions)
What’s the right-hemisphere hypothesis? (Vs. valence hypothesis)
The right hemisphere is dominant for emotion recognition (traditional theory: lateralization of the brain functions)
Attention and spatial ability occurs in which hemisphere?
Right
Damage of the right parietal cortex?
Neglect of the body on the left side
Damage of the right temporal cortex?
Neglect of surroundings on the left side
Damage to the left hemisphere?
Not much neglect
What happens in split brain patients?
Corpus callosum is cut, almost no communication between hemispheres
Response depends on what in split brain patients?
Hemisphere stimuli is presented to
Who are split brain patients?
Epilepsy
Corpus callosum is cut, half of body is affected (less seizures)
List 3 reasons why speech is most efficient type of language?
Long distances
Without seeing
To get quick attention
What’s the source filter model of speech production?
Source : vocal folds in larynx
Filter : supralaryngeal cavity filters sound
Why do only humans speak?
1) limitations in speech sound production
- larynx position
- vocal and motor control
- breathing control
2) speech/language is more than just production
Explain semantics, syntax and prosody?
Semantics = meaning Syntax = grammar Prosody = melody
What’s the Broca’s area and where is it found?
In left frontal cortex
Language production and comprehending complex sentences
What’s the wernickes area and where is it found?
Left temporal cortex
Language comprehension
What’s mcgurk and mcdonald?
Visual speech perception
Hearing gaga
Seeing baba
Perceiving dada
Why did language evolve?
Information exchange
Social aspect of language
There are 2 connections between the hemispheres what are they?
Corpus callosum (network of axons)
Commissures (small band of axons)
