写mark-eprime注意事项
2013-12-07 16:07阅读：
nE-prime语句
nDispSample.OnsetSignalEnabled
= True
DispSample.OnsetSignalPort =
&H378
刺激呈现时触发Mark
nDispSample.OnsetSignalData
=
c.GetAttrib('StimType')
为不同的实验条件设置不同的marker
(整数，1 &nh; 255)
=================================================
writePort &h378,0
sleep 1
writePort &h378,val(c.GetAttrib('con'))
sleep 1
----------
writeport &H378,0
sleep 1
if stimulus.ACC=1 then
writeport &H378,val(c.GetAttrib('con'))+10
sleep 1
else
if stimulus.RESP<>'' then
writeport &H378,val(c.GetAttrib('con'))+20
sleep 1
else
writeport &H378,val(c.GetAttrib('con'))+30
sleep 1
end if
end
val数值化处理，先归零再整你其他的
====================================================
实例一：对图片反馈的mark,
标蓝色的为通用语句；没有标记的为实验中，自己设定的控件名称。
pra.OnsetSignalEnabled = True
pra.OnsetSignalPort = &H378
If ImageDisplay2.ACC = 1
then
pracsinter.OnsetsignalData = 101
else if ((ImageDisplay2.ACC=0)
and (ImageDisplay2.RT>0))
then
pracsinter.OnsetsignalData =102
else if ImageDisplay2.RT=0
then
pra.OnsetsignalData =100
else
pra.OnsetsignalData =0
end if
end if
end if
writeport &H378,0
=========================
实例二：对图片呈现的mark,
标蓝色的为通用语句；没有标记的为实验中，自己设定的控件名称。
TextDisplay3.OnsetsignalEnabled =
True
TextDisplay3.OnsetsignalPort =
&H378
TextDisplay3.Onsetsignaldata = 9
writeport &H378,0
========
实例三：对图片呈现的mark,
调用了list里面的attribute(比如：如下调用了list里一个名为“kind”的属性)；标蓝色的为通用语句；没有标记的为实验中，自己设定的控件名称。
Dim P <=''
span=''>
P=c.GetAttrib('kind')
ImageDisplay2.OnsetSignalEnabled =
True
ImageDisplay2.OnsetSignalPort =
&H378
ImageDisplay2.Onsetsignaldata = P
writeport &H378,0
========
实例四：对图片呈现的mark,
调用了list里面的attribute(比如：如下调用了list里一个名为“kind”的属性)，并且在mark中对不同的attribute类型进行分类（比如：如下如果调用的是list里一个名为“kind”的属性；kind
=1或2；那么mark则为：121或122）；标蓝色的为通用语句；没有标记的为实验中，自己设定的控件名称。
dim P <=''
span=''>
P =c.GetAttrib('kind')
TextDisplay1.OnsetSignalEnabled =
True
TextDisplay1.OnsetSignalPort =
&H378
TextDisplay1.Onsetsignaldata = P
+120
writeport &H378,0
============
注意事项：
一。
TextDisplay1.OnsetSignalEnabled
------表示的是：TextDisplay刺激呈现（OnsetSignal）那刻，打开得相应端口。
同样OffsetSignal则为刺激消失那刻的标记，但是需要注意in
E-Prime parlance, stimulus 'offset' does not
mean either the end of stimulus presentation, nor the onset of the
following stimulus; 'offset' actually refers to when
E-Prime stops executing code for that object and moves on to
executing further instructions.
摘自
https://groups.google.com/forum/?fromgroups=#!msg/e-prime/nVGDGTfGnhk/9EZcFfi6EkwJ
PreRele value of 1-20 ms less than the Duration of the
stimulus object. E.g., for your object with a Duration of
500, set PreRele to 490. Now your trigger will coincide
exactly with the onset of your stimulus, and will t for 10 ms, when
the 'offset' of the stimulus occurs.
===============================================================================
Prerele是指提前准备刺激：我测试过此处为0或100或200的条件下的RT与mark中（刺激呈现时间mark（时间点）减去刺激反应时间mark（时间点）;之后除以采样的Hz数即得出RT的秒数），这两个RT差值一般均为30ms-10ms不等，并求各种条件下的差值均值。均值都差不多。故我在实验中就没有Prerele。
https://support.pstnet.com/hc/en-us/articles/229359587-INFO-How-do-I-send-a-signal-to-an-external-device-17212-
Detail
Support for sending a signal to an external device (e.g., another
machine, EEG) is available in E-Prime via port communications or
through writing your own Windows DLLs.
For port communications, a small amount of script must be used in
an InLine Object. To send a signal to the port, you should use the
WritePort command in an Inline in your experiment. The parameters
for WritePort are follows:
WritePort address, value
The address of your port can be found by selecting 'System' from
the Windows Control Panel, clicking on the Device Manager tab, and
navigating to Ports. Select the parallel (LPT or printer) port,
click the Properties button, and select the Resources tab. The
address of the currently accessible port will be shown.
In the WritePort command, the port address may be specified in
decimal or hexadecimal notation. Ple refer to the Val function in
the E-ic Help file for further explanation. When using hexadecimal
notation, E-ic requires '&H' to be inserted prior to the
address:
| WritePort &Haddress, value |
The most common parallel port address is (in decimal) 888, which
translates in hexadecimal notation to 378. However, we strongly
recommend that you refer to your own System properties to find the
available port address on your own machine.
You must also remember that, when writing to the parallel port, you
are sending 8 bits of data at once. For the WritePort command, the
value parameter is translated into binary notation to determine the
bit pattern. Since this binary representation corresponds to a
specific bit representation, you must send a value which translates
(in binary) to send the appropriate bit representation.
Essentially, you should write a '1' to any bit whose corresponding
pin you wish to turn 'on.' A '0' is written to any bit whose
corresponding pin you wish to turn 'off'. If you were to send all
'0''s to the port, the binary notation for this would be 000000000.
To send a signal to bit number '2', the binary notation would
translate to 00000010.
The bit pattern then corresponds to the pin connections. Bits are
either 0-ed or 1-ed. Pins are always 1-ed.*****Ple note: The first
available bit to pin connection begins at bit number 1 and at pin
number 2. You cannot send a signal to pin number one.
Therefore, if you wanted to turn on bit number one an a 1-ed bit
pattern, and leave the rest off, you would send a signal of '1' to
pin 2, and a signal of 0 to pins 3-9. In binary notation, this
would be written 00000001. In decimal or hexadecimal notation, this
would translate to '1'. If your port address were (in hexadecimal)
378, the Write Port syntax for this would be:
Bit to pin mapping is relatively standard for the parallel port.
Ple refer to documentation for your hardware and/or port address
for a mapping of bits to pins.
E-Prime is capable of sending a signal to the port for interfacing
with an external device. The receipt and handling of the signal by
the other machine is the responsibility of the user. With the
WritePort command, E-Prime may be used to trigger an event (e.g.,
signal an external device to begin data acquisition) or notify an
external device of an event (e.g., in order to mark the event in
the data collected by the external device).
When sending more than a TTL pulse to the port, you must write your
own Window
