The association cortices and complex brain functions Flashcards
Association cortex
Unimodal association areas
Multimodal association areas
Multimodal sensory association areas project to multimodal motor association areas
Hierarchical organisation of sensory systems
Association cortex
Secondary sensory cortex
Primary sensory cortex
Thalamic relay nuclei
Receptors
Association cortex
Unimodal association areas (single modality)
Multimodal association areas (>1 modalities)
Primary sensory area
Initial stage of processing
Primary motor area
Final stage for cortical processing of motor commands
The main multimodal association areas
Posterior association area (perception, language)
Temporal association area (emotion, memory)
Prefrontal association area (executive functions)
Specialised language areas in the brain
Region of dominant left frontal lobe, articulate speech
Aphasia
Partial or complete loss of language abilities following brain damage
Often without loss of cognitive faculties or the ability to move the muscles used in speech
Asymmetrical language processing
Wada procedure
Used to determine hemisphere dominant for speech
Wernicke’s aphasia
Fluent speech
Poor comprehension
Three main multimodal association areas
Posterior association area (perception and language)
Temporal association area (emotion, memory)
Prefrontal association area (executive functions)
Agnosias
Disorders of high level sensory analysis
Apraxias
Disorders of high level motor coordiation
Aphasias
Disorders in communicating and using symbols
