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NE-High Cortical Function (大腦構造與皮質功能 (皮質功能與構造上的相關 (language skill:left…
NE-High Cortical Function
大腦構造與皮質功能
組成
Subcortical structure:caudate、putamen、globus pallidus、thalamus
Limbic and Paralimbic System:amygdala、hippocampus、cingulate、anterior insular
Cortex:frontal、parietal、occipital、temporal
皮質功能層次
OUTPUT → concept formation / reasoning / executive function → language skill + visuospatial skill → attention / concentration / memory → AROUSAL & INPUT
皮質功能與構造上的相關
language skill:left side posterior brain
visuospatial skill:right side posterior brain
abstraction / judgement / executive function:frontal lobe and motor tract
attention / concentration / memory:thalamus / projection area / limbic system
arousal:brain stem ARAS
皮質異常表現
Introduction
Mood and Behavior:affect and mood / behavior problem / psychiatric symptom
Severity of ADL (activity of daily life) Disturbance
Cognition:attention注意力 / memory記憶 / language語言 / visuospatial function視空能力 / executive function執行能力 / praxis運用能力
Disorder of Cognition
Disorder of Memory (Amnesia失憶症)
患者在記憶形成的過程中(encoding / storage / retrieval)有缺陷
患者是否會重複詢問相同的問題、是否記得最近對話
Memory Deficit
Papez Circui
:gyrus cinguli - hippocampal formation - mamilliary body - anterior nuclei of the thalamus四者成一個迴路
Amygdala Prefrontal Circuit
如何評估:remote memory (中秋節幾月幾號、回憶個案年齡生日等)、recent memory (剛才請你記住的三樣物品是什麼)、non verbal learning (for working memory,請你記住下列五樣東西)
Memory Network:thalamus、cingulate gyrus、hippocampus (medial temporal lobe)
Disorder of Language (Aphasia失語症)
因CNS lesion (left dominant cerebral hemisphere) (usually secondary)導致對於comprehension或production of language感到有困難
患者對發音/拼字/對談有困難、停止閱讀、無法書寫
lesion的分類:Broca / Wernicke / Conduction / Transcortical / Anomic aphasia
如何評估:spontaneous speech (讀寫為非必要的測試) / understanding of spoken language / naming objects / repetition / reading (alexia失讀症) / spontaneous writing (agraphia)
Alexia失讀症:不能讀文章,與學習能力無關,通常為sensory aphasia,與posterior temporal lobe有關
Alexia WITH Agraphia:usually with a lesion of angular gyrus
Alexia WITHOUT Agraphia:disruption of the splenium of the corpus callosum
Disorder of Attention
Confusional State混亂狀態:a disorder of global attention
Spatial Neglect:asymmetry of attentional processes
患者是否容易分心、有無辦法完成任務
Disease:delirium、distractibility、hemi-neglect
如何評估:訊息登錄、digit forward (記一系列的數字)、serial subtraction test (系列減法測驗,例如100-7)
Attention Network:reticular formation、cingulate gyrus、posterior parietal cortex、frontal cortex
Impairments of Executive Function (執行能力障礙)
a sign of dysfunction in the prefrontal cortex
除了執行能力以外,與情緒也有關
如何評估:Wisconsin Card Sorting Test (WCST-S) (for testing perseveration)
Syndrome
orbitofrontal syndrome:poor social decision making / environmental dependency
dorsolateral syndrome:impaired decision making & working memory / executive memory dysfunction
medial syndrome:akinesia運動不能 / mutism緘默 / apathy冷漠
subcortical syndrome:slowed thought / apathy / impaired decision making
Signs:positive / impaired decision making / distractibility / instability of emotion / social disinhibition / perseveration固著行為 / impulsiveness / 飲食過量
Disorders of Visuospatial Function (Agnosia失識症)
分類:visual / finger / anosognosia沒有病識感 / autotopagnosia不知道身體的部位是什麼
elementary sensory perception正常,但患者無法將正確的涵義與感知做連結
分成三個面向
History:認不得人、在家裡附近迷路
Visual Perception:對燈光、顏色、方向的感知
Visual Recognition:與其他皮質功能的連結有關,例如語言或空間感
如何評估:line orientation test or overlap figure、copy figure (MMSE) or drawing picture、figure naming or face recognition
Disorder of Praxis (Apraxia失用症)
無法使用工具,例如:剪刀、杯子、梳子
可能因elementary motor、extrapyramidal、cerebellar疾病有關
通常是left parietal lobe lesion
如何評估
ideational apraxia:concept problem
ideomotor apraxia:production problem (通常是left inferior parietal lobe lesion)
dressing difficulty
Mini-Mental State Examination (MMSE)
目前最廣泛使用測驗大腦皮質功能的簡單工具,可信度為0.89 (高)
六個面向:定向感、注意力、記憶力、語言功能、口語理解、運用能理及建構能力
總分為30分,會受到年齡及教育程度影響