Introduction to Cerebral Lateralization and function
The Split Brain
Evolutionary Perspective of Cerebral Lateralization and Language
Wernicke-Geschwind Model
100
loss of ability to produce or comprehend lang due to brain damage
What is aphasia
100
Split-brain experiments that led to new knowledge on the function of the corpus callosum
What is cats
100
Evidence of lateralization of function suggests it was present starting at this point in evolution.
What is in basic form 500 million years ago.
100
This condition causes someone to have symptoms of poor comprehension of written and spoken language, meaningless speech and superficial language structure, but rhythm and intonation of normal speech.
What is Wernicke's aphasia.
200
The loss of ability to perform voluntary movements that are done with ease when not thinking about them
What is apraxia
200
This lens limits visual input to one hemisphere of split-brain patients while they scan complex visual material, such as a book.
What is Z lens
200
The Wernicke-Geschwind model is based on this evidence.
What is case studies of aphasic patients with strokes, tumors and penetrating brain injuries.
300
more lateralized than female brains
What is male brains
300
This phenomenon describes when one hand intercepts the other when disagrees on perception of world
What is the helping hand phenomenon
300
This theory proposes the perception and comprehension of speech depends on words activating the same neural circuits in the motor system that would be activated if the listener said the words.
What is the motor theory of speech perception.
300
These imaging techniques are used extensively for language studies.
What is CT and MRI scans.
400
the non-invasive test of cerebral lateralization
What is the Dichotic listening test
400
The left and right hemispheres of a split-brain patient communicate in this way.
What is neurally through indirect pathways through the brain stem.
400
Primary Visual Cortex -> Angular Gyrus -> Wernicke's area –> Broca’s area –> Primary Motor Cortex
What is the circuit of brain activity for someone responding to words read and saying them aloud.
500
The first person to anticipate hemisphere lateralization
Who is Dr. Marc Dax
500
Current split-hem perspectives believe this is the relationship between the left and right hemispheres.
What is often some communication across hemispheres, such as for emotion.
500
This was mainly gestural rather than vocal and included various calls which held different meanings based on social context.
What is non-primate language.
500
The Wernicke-Geschwind Model is used in this setting.