Functional neuroanatomy [email protected]rd.edu • Attention • Language • Knowledge • Imagery • Memory – States ‘of mind’ (and body) – Adaptation/plasticity – Language; visual processing; mental imagery • How our brains integrate types of information to develop concepts; how previous experience affects processing of new information
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• How our brains integrate types of information to develop concepts; how previous experience affects processing of new information
What are we doing with our brains at this moment?
(The student’s brain)
• Feeling your chair
• Squirming (moving)
• Watching
• Listening
• Remembering
• Paying attention
• Sleeping
• Feeling anxious
• Feeling hungry
• What happens when you ask a question?
• Learning
5 types of cortical tissue
Localization of function in the nervous system: Functional networks
5 major brain systems subserving
cognition and behaviorLeft perisylvian language networkParieto-frontal network for spatial attentionOccipitotemporal network for object/face recognitionMedial temporal/limbic network for learning & memoryPrefrontal network for attention & comportment
Knowledge: The convergence of language, perception, and memory
Language & naming
Visual systems & category-specific processing
Imagery/sensory memory
Knowledge: The convergence of language, perception, and memory
Language & naming
Visual systems & category-specific processing
Imagery/sensory memory
Lesion studies of the language network:The major nodes
Broca’s (production) Wernicke’s (comprehension)
Lesion studies of the language network:Disconnection syndromes
Alexia without agraphia
Geschwind N & Kaplan E, Neurology, 1962
Functional neuroimaging of the language network
One to many, many to oneCJ Price, J Anat 2002
Language function: Using neuroimaging to test hypotheses
CJ Price, J Anat 2002
What’s in a name?A means to access specific types of
knowledge
What’s in a name?A means to access specific types of
knowledge
Elephant
Linguistic access to specific types of knowledge
Damasio H, Nature 1996
Knowledge: The convergence of language, perception, and memory
Language & naming
Visual systems & category-specific processing
Imagery/sensory memory
Visual processing: Two pathwaysDorsal (Occipito-parietal): Object & object feature recognition
Disorders:
visual object agnosia
prosopagnosia
achromatopsia
Ventral (Occipito-temporal): Visual recognition of spatial location