Handy programs to visualize NIRS data (2): plotTopoMap

37 sec read

Often you need to view the spatial pattern of activation as in the example below. plotTopoMap allows you to do that. It probably only works for Hitachi devices where the spatial relationship between channels are known.

plotTopoMap
plotTopoMap

In the above example, the activation pattern of a 24-channel patch is plotted. The white number indicates the channel number. Color indicates the signal intensity. This map is smoothed. You can immediately tell that what areas are activated. You can also rotate the patch in case the orientation is not correct. You can also hide the channel numbers.

Here is an example on how to use this function:

figure; plotTopoMap(randn(24,1),'4x4');

The 2nd parameter is the patch configuration. It can be ‘4×4’, ‘3×11’, ‘3×5’ or ‘3×3’.

And here is the source code of the function.
plotTopoMap.m. Type help plotTopoMap in MatLab to see how to use it.

Note. This script is adopted from the topo program made by Hitachi.


Subscribe to my blog
Don't want to miss new papers in your field? Check out Stork we developed:

fNIRS Journal Club

We have an online fNIRS Journal Club in the end of each month. For the last journal club on March 21st, the presenter was...
Xu Cui
22 sec read

NIRS知识红包竞猜

想了解近红外fnirs技术的同学,可以考虑参加我们周六中午的知识竞猜活动。因为心仪科技的慷慨赞助,我们今年的红包比往年大几倍,从5元涨到20元,最后还有大题,奖励100元的大红包。欢迎大家踊跃参加,也欢迎邀请朋友来。 时间:北京时间本周六(2020/2/15)中午12点,在“NIRS知识红包竞猜”群。 不了解心仪的同学,可以趁此机会了解一下: 上海心仪电子科技有限公司是一家专业从事心理学、认知神经科学和脑科学产品技术服务商,目前公司代理了德国ANT便携式脑电、美国ISS公司的Imagent近红外、韩国OBELAB便携式近红外、MAG&More公司的PowerMag系列经颅磁,为脑功能成像和调控提供全套解决方案。
Xu Cui
2 sec read

After fNIRS experiment …

Xu Cui
13 sec read

Leave a Reply

Your email address will not be published. Required fields are marked *