作者traci0304 (好大一隻魚)
看板Cognitive
標題[請益] paper中的實驗方法
時間Sun May 11 02:16:25 2014
各位版友大家好
在看Paper時遇到一些困難
覺得嚴重阻礙後續的理解
因此PO上來跟各位請益
原文在此：
Ten normal, right-handed volunteers performed a serial reaction-time task
while regional cerebral blood flow (rCBF) was mapped by positron emission
tomography (PET) .
The task consisted of a number(1,2, or 3) appearing on a computer screen,and
the participant was instructed to press the corresponding key on the number
pad with the right hand as quickly and as accurately as possible.
The sequence of stimuli was determined by a finite-state grammar and appeared
every 700 ms in 90-s blocks with 45-s rests between blocks.
A total of 53 blocks were performed .
其實大多數的地方理解都沒問題
問題出在於
appeared every 700 ms in 90-s blocks with 45-s rests between blocks
這句我完全卡住了(只看得懂700毫秒，然後.....)
因為我完全沒有相關背景
僅是因為修課需要閱讀paper
要查詢也不知道該從何查起
想請問這個實驗設計是怎麼進行的呢?!
謝謝大家!!
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 36.231.163.50
※ 文章網址: http://webptt.com/m.aspx?n=bbs/Cognitive/M.1399745788.A.1A8.html
1F：推 scottlee444:每0.7s出現一個刺激，持續一個block(90s)，兩個block 05/11 10:03
2F：→ scottlee444:間有45s的休息時間 05/11 10:03
3F：推 mulkcs:我覺得是每個90秒的blocks, 第700ms出現刺激, 每個block 05/11 23:39
4F：推 mulkcs:中間間隔45秒 05/11 23:40