Neuropsychology Fundamentals (Dr Feifer) Flashcards
(47 cards)
Four Lobes of Cerebral Cortex
Occipital, Parietal, Temporal, Frontal
Occipital Lobe
Is dedicated to visual processing. Includes the visual cortex where the dorsal (spatial/where) and ventral (visual/what) streams originate. 
Parietal lobe
Processes sensory, and spatial information, and is the main receptive area for the sense of touch. It also has areas involved with higher level language processing.
Temporal lobe
Houses language and memory functions. It is also involved with auditory and visual processing. 
Frontal lobe
Handles executive functions, such as planning, working memory, and self monitoring, as well as reasoning, language, and motor planning functions.
Basal ganglia
Control of voluntary motor movements, procedural, learning, routine behaviors, cognition, and emotion. 
Limbic system
Includes the amygdala, singular cortex, hippocampus, and hypothalamus. 
Amygdala
Primarily responsible for fear conditioning and processing emotional responses. Stimulates fight or flight responses. Also involved with memory processing and decision-making. 
Anterior Cingulate Cortex (Medial Prefrontal Cortex)
Directs attention, inhibits responses, and plans a behavioral response. Other responsibilities include cognition and emotion, as well as modulating ambiguity. 
Posterior Cingulate Cortex
Processes, episodic memories and may be related to working memory performance
Hippocampus
Crucial in spatial navigation and the formulation and consolidation of memories. There are two hippocampi, one on each side of the brain. 
Brian basis of Dysphonic dyslexia
A deficit in phonology, which is housed in the temporal-parietal gradient along the supramarginal gyrus
Brain basis of surface dyslexia
A deficit in orthographical processing, housed in the angular gyrus, a parietal region involved in symbol system processing.

Brain basis of mixed dyslexia
Impairment in phonological and orthographical processing skills. Deficit in the inferior parietal lobes, involving both the supramarginal gyrus and angular gyrus.
Comprehension deficits
Mechanical aspect of reading is normal, but difficulty persists deriving meaning from print. Deficits may include poor language and vocabulary skills, limited working memory, or poor executive functioning skills that facilitate encoding and retrieval of verbal information. 
Verbal dyscalculia
Deficit in the automatic retrieval of number facts stored in a linguistic code. Brain region responsible for this function is the angular gyrus. 
Procedural dyscalculia
Difficulty recalling the algorithm or sequence of steps when performing longer math operation, such as multiplication and division. The left prefrontal region is responsible for sequential ordering of symbolic information. 
Semantic dyscalculia
Deficits in magnitude representations, understanding, higher level, math, concepts, and transcoding, difficult math operations into a base 10 format. Primary brain region is the horizontal interparietal sulcus.
Graphomotor dysgraphia
Motor skill deficits involved in the planning organization, guidance, and automaticity of motor movements that physically transcribe thoughts and ideas on paper. 
Dyslexic (spelling) dysgraphias (3 subtypes) 
A. Dysphonic dysgraphia - hinders the ability to differentiate sounds in words. The speller fails to represent every sound with a symbol.
B. Surface dysgraphia - impact the ability to spell phonetically, irregular words due to difficult difficulties, understanding, orthographic spelling patterns and conjuring up a visual image of the printed word form.
C. Mixed dysgraphia - the most severe type of spelling disorder characterized by a combination of poor phonological processing skills, poor orthographic skills, limited working memory, and bizarre spelling errors
Executive dysgraphias
A wide range of written language deficits that stem primarily from executive dysfunctions, including difficulty planning and organizing ideas, poor grammar and syntax, lack of a topic sentence, little elaboration, or detail, and poor understanding of how words and phrases can be combined. 
Cerebral structures of dysgraphia (written expression, and spelling depend on numerous spring structures working in concert)
A. Supramarginal gyrus - spelling by sound
B. Angular gyrus - visualizing words
C. Limbic system - emotional connectivity to the subject matter.
D. Anterior cingulate gyrus - focusing attention, inward toward internal resources, thoughts and ideas.
E. Hippocampus - retrieval of stored memories
F. Inferior parietal lobes - higher level thinking and problem-solving
G. Frontal lobe - syntactical arrangement of thoughts and ideas in a linguistic manner
H. Dorsolateral prefrontal cortex - Organization and planning of thoughts, self-monitoring responses, holding ideas in working memory, sustaining attention, initiating task, and maintaining motivational persistence
I. Pre-motor cortex - planning motor responses
J. Motor cortex - execution of metric act of writing
K. Basal ganglia - automaticity of handwriting
L. Cerebellum - motor coordination and sequencing
Focused attention
The anterior cingulate direct attention to a particular stimulus while the amygdala registers its emotional attractiveness or aversiveness 
Sustained attention
Vigilance is maintained by right inferior parietal lobe