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Medical Definition of Electrocerebral silence
1. Flat or isoelectric encephalogram; an electroencephalogram with absence of cerebral activity over 2 uv from symmetrically placed electrode pairs 10 or more centimeters apart, and with interelectrode resistance between 100 and 10,000 ohms; if such a record is present for 30 minutes in a clinically brain dead adult and if drug intoxication, hypothermia, and recent hypotension have been excluded, the diagnosis of cerebral death is supported. Synonym: electrocerebral inactivity, flat electroencephalogram, isoelectric electroencephalogram. (05 Mar 2000)