# The parPulse function cannot work in the NeuroScan Curry 9 system

**URL:** <https://psychtoolbox.discourse.group/t/the-parpulse-function-cannot-work-in-the-neuroscan-curry-9-system/5398>\
**Category:** Programming Help\
**Tags:** windows\
**Created:** [June 20, 2024, 9:08am UTC](https://psychtoolbox.discourse.group/t/the-parpulse-function-cannot-work-in-the-neuroscan-curry-9-system/5398 "2024-06-20T09:08:13Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![HuizhongWu](https://avatars.discourse-cdn.com/v4/letter/h/8edcca/32.png) [@HuizhongWu](https://psychtoolbox.discourse.group/u/HuizhongWu)\
**Post date:** [June 20, 2024, 9:08am UTC](https://psychtoolbox.discourse.group/t/the-parpulse-function-cannot-work-in-the-neuroscan-curry-9-system/5398/1 "2024-06-20T09:08:13Z")

</div>

Hi,

I used the trigger version of parPulse to send triggers to the NeuroScan Curry 9 system. However, no value was obtained in the event file. Is there something wrong with my code or EEG system?

```auto
parPulse(hex2dec('378'), 201, 1, 255, 2*10e-3,1)

```

Thanks

---

<div class="post-metadata">

**Author:** ![HuizhongWu](https://avatars.discourse-cdn.com/v4/letter/h/8edcca/32.png) [@HuizhongWu](https://psychtoolbox.discourse.group/u/HuizhongWu)\
**Post date:** [June 20, 2024, 9:08am UTC](https://psychtoolbox.discourse.group/t/the-parpulse-function-cannot-work-in-the-neuroscan-curry-9-system/5398/2 "2024-06-20T09:08:57Z")

</div>

Actually, even no event file was produced.

---

<div class="post-metadata">

**Author:** ![HuizhongWu](https://avatars.discourse-cdn.com/v4/letter/h/8edcca/32.png) [@HuizhongWu](https://psychtoolbox.discourse.group/u/HuizhongWu)\
**Post date:** [June 20, 2024, 9:49am UTC](https://psychtoolbox.discourse.group/t/the-parpulse-function-cannot-work-in-the-neuroscan-curry-9-system/5398/3 "2024-06-20T09:49:17Z")

</div>

Sample rate is 512 Hz.