脑电波产生的机制主要是（      ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25949' and id < 2180079 and id<>'2180079' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25949' and id > 2180079 and id<>'2180079' order by id asc limit 5