B9902022
B9902037
周書民
胡紀豪
Broca's area
 Pierre Paul Broca reported impairments in two
patients who had lost the ability to speak after injury
of the brain. Since then, the approximate region he
identified has become known as Broca’s area
Wernicke ‘s area
 Karl Wernicke, a German neurologist and psychiatrist
who discovered that damage to this area could cause a
type of aphasia (now called Wernicke's aphasia or
receptive aphasia) in 1870’s.
Location
 Both in dominant cerebral hemisphere (97% in left
hemisphere)
 Broca‘s area : posterior to inferior frontal gyrus
 Wernicke ‘s area : The posterior section of the
superior temporal gyrus (STG)
Location
唸看到的字詞
唸聽到的字詞
Wernicke ‘s aphasia
 impairment of language comprehension, and speech
that has a natural-sounding rhythm but a jumbled
syntax without recognisable meaning (sounds fluent
but makes no sense)
Broca‘s aphasia
 Patients with Broca‘s aphasia understand what is being
said to them, but are unable to speak fluently.
 Other symptoms include problems with articulation,
word-finding, word repetition, and producing and
comprehending complex grammatical sentences, both
orally and in writing.
比較
 布洛卡區損傷(布洛卡失




語症)
使一個人無法講話
可以了解語言內容
無法用字詞
說話緩慢並且不連貫
 韋尼克氏區損傷(韋尼克
氏失語症)
 無法了解語言內容
 可以清楚的說話但是字
詞的使用是無意義的組
合這種現象被稱為「字
詞沙拉」，因為他們把
字彙就像生菜沙拉混合
在一起使用

研究方法的演進與歷史
 50年代初期Wilder Penfield 和 Herbert Jasper
用電刺激腦部 → 抑制語言
 60年代 Wada測試，使用sodium amytal (amobarbital)
麻醉劑注入左右頸動脈
→ 測試語言能力
 近期使用腦部顯影技術(正子掃描) →
 右腦損傷會有情緒上的問題，稱為aprosodia
補充
Right homologous area of Wernicke's area
 Research suggests that the area corresponding to the
Wernicke’s area in the non-dominant cerebral
hemisphere has a role in processing and resolution of
subordinate meanings of ambiguous words. In
contrast, the Wernicke's area in the dominant
hemisphere processes dominant word meanings.