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Assessment
EVENT-RELATED POTENTIAL (ERP)
المؤلف:
John Field
المصدر:
Psycholinguistics
الجزء والصفحة:
P103
2025-08-18
98
+
-
20
EVENT-RELATED POTENTIAL (ERP)
A small change in the level of electrical activity in the brain, in response to a stimulus such as hearing or seeing a word. The electrical activity is monitored by means of electrodes attached to the scalp and the change is identified against a baseline level of activity.
The peaks of an ERP are characterised in terms of their polarity (positive or negative voltage) and in terms of how many milliseconds intervene between stimulus and effect. Especially studied has been the N400, a negative peak which occurs 400 milliseconds after the subject reaches a semantically anomalous point in a text (example: The cats won’t bake the food that Mary leaves them). It is entirely distinct from the P600, a positive peak 600 milliseconds after a syntactic anomaly (example: The cats won’t eating the food that Mary leaves them). Where a sentence contains both semantic and syntactic anomalies, both ERPs are observed. The finding has suggested to researchers that semantic and syntactic processing are independent of each other.
See also: Brain imaging
الاكثر قراءة في Linguistics fields
اخر الاخبار
اخبار العتبة العباسية المقدسة
الآخبار الصحية
"المهمة".. إصدار قصصي يوثّق القصص الفائزة في مسابقة فتوى الدفاع المقدسة للقصة القصيرة
(نوافذ).. إصدار أدبي يوثق القصص الفائزة في مسابقة الإمام العسكري (عليه السلام)
قسم الشؤون الفكرية يصدر مجموعة قصصية بعنوان (قلوب بلا مأوى)
