作者traci0304 (好大一只鱼)
看板Cognitive
标题[请益] paper中的实验方法
时间Sun May 11 02:16:25 2014
各位版友大家好
在看Paper时遇到一些困难
觉得严重阻碍後续的理解
因此PO上来跟各位请益
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 .
其实大多数的地方理解都没问题
问题出在於
appeared every 700 ms in 90-s blocks with 45-s rests between blocks
这句我完全卡住了(只看得懂700毫秒，然後.....)
因为我完全没有相关背景
仅是因为修课需要阅读paper
要查询也不知道该从何查起
想请问这个实验设计是怎麽进行的呢?!
谢谢大家!!
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1F：推 scottlee444:每0.7s出现一个刺激，持续一个block(90s)，两个block 05/11 10:03
2F：→ scottlee444:间有45s的休息时间 05/11 10:03
3F：推 mulkcs:我觉得是每个90秒的blocks, 第700ms出现刺激, 每个block 05/11 23:39
4F：推 mulkcs:中间间隔45秒 05/11 23:40