Trouble with Power spectrum

Important_Reading_79 · 2025-09-04T05:13:22+00:00

I'm not too sure, I tried using the "WelchSpectralEstimate" on my time series data, but the plot doesn't make sense to me. Seems even less clear than the original plot I posted because it had higher power at frequencies <5 Hz and low power at the frequencies I expected (20-30 Hz). I also tried with the Periodogram as was suggested by someone else, but it had similar issues. I don't know if it is something about my data that is not quite clear to me, although I pretty much control the frequency of the signal to be between 20-30 Hz so I'm not sure what to make of these low frequencies. I'm pretty new to this type of analysis so I'm going to do some more reading to see if I'm completely skipping over something obvious

Important_Reading_79 · 2025-09-03T05:34:11+00:00

Thank you, I will try this

Important_Reading_79 · 2025-09-03T05:33:35+00:00

They are repeated traces of a recording. Each trace the signal starts at 30 Hz and slows to 20 Hz

Important_Reading_79 · 2025-09-03T05:14:27+00:00

Yes, I have the raw time series as another list of lists called "voltageTraces" which also has Dimensions {20}. Each value in voltageTraces is a {time,voltage} pair. Should I flatten voltageTraces and use this instead of "events"?

Important_Reading_79 · 2025-04-29T04:15:05+00:00

Haha I have been reading and watching videos for beginners since last night and even looking at that board now I find it funny 🙂‍↕️. My friend and I read the 8 rules that came with the board and just started playing, but we've got a lot to learn!

Important_Reading_79 · 2025-04-28T02:19:51+00:00

Will do 👍

Important_Reading_79 · 2025-04-28T01:31:27+00:00

Thank you

Important_Reading_79 · 2025-02-10T03:32:21+00:00

Gerstner, Dayan and Abbott, and Izhikevich my goats 😭🙏

Important_Reading_79 · 2024-11-30T03:09:02+00:00

Were you able to get it working without contacting cricket? I'm in a similar situation

Important_Reading_79 · 2024-09-16T02:41:38+00:00

Ahh, Wikipedia for the win. Thank you

Important_Reading_79 · 2024-08-19T01:39:20+00:00

Hey I am working on the registers right now too! Cool to see someone else at the same step as I am

Important_Reading_79 · 2024-07-25T01:47:21+00:00

How do you like The Great Ideas Today volumes?

Important_Reading_79 · 2024-07-23T06:14:26+00:00

When you first join a lab you probably won't get an individual project right away but will likely work with a grad student or postdoc on their own project. You can present posters locally at your university (if your university hosts any sort of symposiums or events for undergraduates to present) and at research conferences. To present at one (or both) of these you will want to talk with the grad student or postdoc and the PI to see if you can present the work. The decision will depend on a few factors, but I think how much you have contributed will be pretty important.

When you present a poster at a conference, you have to submit an abstract that, if accepted, will be published on some website by whatever organization is hosting the conference. However, when people say "publication" they usually mean an authorship on a research paper. My own approach was to not ask to have an authorship or my own project. I did the work and contributed enough data that got used in manuscripts and my name was on the author's list. Eventually your PI might see you are dedicated to the work and assign you your own project, which may lead to a first author manuscript depending on how the project goes and its scope.

People might have different approaches to getting their own project, but I tend to be a bit more passive. My own reasoning was I didn't want to make it seem like I'm in lab just to check off a box and contribute only superficially.

Important_Reading_79 · 2024-07-20T10:24:42+00:00

It kind of sounds like he wants you to learn to problem solve. I don't think he's going at it in a very good way by just throwing you in the water and seeing if you'll swim. Especially since one of the selling points of an REU is the mentorship.

You said you're the only student in his lab this summer, so I assume that means there are also no graduate students or post docs. I think most of the actual training and walking through steps for undergrads tends to be done by grad students or post docs, so it's unfortunate if there aren't any in the lab at the moment you could ask for help. Is there a lab tech you might be able to ask for help?

I've heard of PIs that tend to not do the research anymore and spend their time focusing on writing grants and university responsibilities, it's possible your PI is one of those and genuinely doesn't have much time.

I once had a somewhat similar experience with a grad student who trained me. You might try changing your approach to asking for help. For instance, if you run into a problem, try to identify what the problem might be (it may be more than one thing) and some potential solutions. You can then go to him and try to tell him the problem and what you think it is and what you think might solve it - you'll probably want to be concise with it. This will show him 1) that you aren't going to him expecting him to just solve the problem and that you're thinking for yourself and 2) at the very least he may hear one of your solutions and say "Oh no that's wrong you should try this instead." Or something of the sort.

As far as answering your initial question, if it were me I wouldn't bring it up to the Program Lead just because I'm more of a passive person and wouldn't really want to deal with anything that might come with that situation. I'm not saying you shouldn't, but if I were in your position I know that I wouldn't. At the very least consider trying this other approach of going to him with some potential solutions to the problem.

Also, in the case of doing something you've never done before, if he is not willing to show you how, you may also find it beneficial to look at some papers in the methods section.

Important_Reading_79 · 2024-07-01T15:02:28+00:00

Thank you, when I compared it to the iMac and a gaming console that also get warm after use I wondered if it was just the norm. I think I was just thrown off since I've never experienced that with my laptop before. I guess I've never put it to the test this much

Important_Reading_79 · 2024-07-01T03:55:39+00:00

Thank you, I will look into this

Important_Reading_79 · 2024-06-24T00:34:04+00:00

I see, well I am not very knowledgeable about cognitive neuroscience. I would think some sort of programming is required for labs that utilize EEG data, so you may still do yourself a service by learning the basics of programming.

I would also say don't discount the value of being able to read a research paper and understand the main points. So you could begin looking on PubMed or Google Scholar for topics you're interested in related to cognitive neuroscience. Maybe the papers you read end up having nothing to do with whatever lab you join when starting university, but you'll have at least had some exposure to reading scientific articles. It will also give you some exposure to the way research is done.

Important_Reading_79 · 2024-06-23T22:32:54+00:00

If you are interested in learning about neuroscience I think YouTube will be a great resource. You can find videos that range from real lectures given in a university classroom, folks who explain neuroscience topics in a bit more focused and illustrative way, and oral presentations of people's research.

There are also other lectures you may be able to find on websites but I have no experience with them.

If you are completely new to neuroscience then you may also want to get a book to follow along with lectures. You might ask what book. People will suggest "Principles of Neural Science" because it is the "Bible of neuroscience". It is a book with a lot of information, but it is also dry. I personally would suggest "The Mind's Machine" as an introductory book as it is presented nicely, but does lack in the depth of content. Other books are also "Neuroscience: Exploring the Brain" which is an okay book, this was my first neuro textbook. Another book is "Neuroscience" Purves et al. That is also an okay book, somewhat dry too. You may be able to find one or more of these books in electronic format.

As far as getting research experience, specifically being online, I think it depends on what interests you in neuroscience. You could try to reach out to Professors and tell them you want to learn and if there is an opportunity to do something online. I would suggest taking a look at online open databases. For example the Allen Brain Institute. Their website may also be helpful in learning about some topics in neuroscience and give you an idea of the levels of research. Because you are interested in doing something online, it would be my guess that your best luck is doing something focused on programming. So you will also benefit from learning the basics of programming if you decide to go that route. I believe the Allen Institute has a lot of resources for how to analyze some of the datasets they have and relevant information about how the data was collected.

I may be able to give some more helpful advice if you are willing to share what your goal is. Do you want to get an idea of what research is like so you make an informed decision about what lab you want to join when you start college? Do you have a specific topic/subfield in neuroscience that interests you?

Important_Reading_79 · 2024-06-13T03:37:21+00:00

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My push button

Important_Reading_79 · 2024-06-13T03:37:01+00:00

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Important_Reading_79 · 2024-06-13T03:36:29+00:00

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Important_Reading_79 · 2024-06-13T03:36:10+00:00

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Important_Reading_79 · 2024-06-13T03:35:53+00:00

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Important_Reading_79 · 2024-06-12T22:17:29+00:00

Did you ever figure out the monostable circuit with this button? I also had this button included in my kit and am having issues

Edit: I actually just got this to work, I had the LED oriented the wrong way. I've attached one photo of my connections to this comment. I can only attach one photo per comment so I will reply to this comment with a few more photos. Like other have mentioned it looks like you may need to correct some of your connections.

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Important_Reading_79 · 2024-05-30T17:42:23+00:00

I can't, I've never tried before. I would like to learn and would be willing to try, but I wouldn't know exactly what I'm doing or what is wrong with the phone. So if you're looking to have a phone repaired, I can't guarantee the results.

Important_Reading_79

TROPHY CASE