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Questions tagged [data]

For questions about working with or obtaining specific data sets.

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Flat channels in EEG data

I recorded EEG data of several subjects and for several sessions per subject. Some of the data looks flat as in figure below. But when I looked into the data, the data appears to be okay.I mean it ...
Hannan Naseem's user avatar
1 vote
1 answer
28 views

Methods for comparing extracellular neural response structure to auditory stimulus structure

I have two arrays, one representing an auditory stimulus and the other representing neural activity from auditory cortex. The auditory stimulus has known temporal and spectral structure. The neural ...
user90664's user avatar
4 votes
0 answers
30 views

Gene Expression Database for Psychological Disorders

Is there a comprehensive database available online of gene expression across the brain taken from individuals with psychological conditions? Resources like the Allen Institute's Human Brain Map (link ...
Lambda's user avatar
  • 199
0 votes
0 answers
20 views

How do you analyze temporal order judgments in the traditional way?

I'm looking at analyzing the just noticeable differences (JNDs) in temporal order judgment (TOJ) studies. A modern way to do this is with a multilevel model. And, I am going to do that. But I also ...
John's user avatar
  • 2,513
0 votes
1 answer
36 views

What is the best method for identifying single participants in EMA studies?

I am currently working on an ecological momentary assessment research project. I can't seem to find a clear answer in literature review to this question. My problem is when observations reach to ...
AcidCatfish's user avatar
1 vote
0 answers
69 views

Connectome Datasets Related to Consciousness

I am a mathematics student currently looking for connectome datasets specifically related to consciousness research. I have mainly looked at the following sites: https://neurodata.io/ https://db....
Christopher.L's user avatar
1 vote
1 answer
601 views

Brain network datasets

I am a student from Computer Science and interested in graph theory. I was looking for datasets for brain networks (structural and functional) for graph analysis. I have found brain image datasets ...
learner's user avatar
  • 111
2 votes
1 answer
362 views

Length of questionnaire for long-string analysis

I have a dataset that I am trying to screen for careless responding. I am having a little trouble finding research on what is the minimum length that a questionnaire needs to be in order to do long ...
Mary Smirnova's user avatar
1 vote
0 answers
18 views

Are there any sources on how many of patients with mental illness were hospitalized several times?

I was wondering how likely it is for someone with an mental illness like depression that after he is released is hospitalized again. Could you expect that someone who is released is never in the need ...
miep's user avatar
  • 111
3 votes
1 answer
61 views

Source of data for US suicides (by month or quarter) 2019 vs. 2020

In attempt to answer the question: " Have US suicides increased in March/April 2020 compared to 2019 ?". I've been unable to find any published US data for either 2019 or 2020. Does anyone know of ...
BobE's user avatar
  • 131
1 vote
2 answers
34 views

How to confirm that a more frequently labelled object is a better instance of the label

I have some data from a study where humans are shown an object and asked to select all words from a list that apply to the object. What I am trying to do is use the data to confirm that a particular ...
A. Bollans's user avatar
1 vote
1 answer
386 views

Reporting d-prime results

I am currently working on research analysing yes/no responses in a recognition memory task. The false alarm rate is quite high so I have performed a d-prime test and collected d-prime values. Now that ...
Adam Lord's user avatar
3 votes
2 answers
104 views

What is the name of the survey question style that forces a choice between non-opposite pairs of items, and why is it used?

I've seen personality tests and industrial / organizational psychology tests that force one to choose between non-opposing concepts. What is the name of this question style, and what are the reasons ...
Ben Nilsson's user avatar
3 votes
1 answer
350 views

Unable to run AxoGraph v1.7.6 on macOS 10.15 Catalina

After a recent MacOS update, I am no longer able to run the (latest) AxoGraph software for electrophysiology data analysis on my computer, as I get the following error message: ...
Brunox13's user avatar
  • 141
1 vote
0 answers
24 views

What to consider when subsampling

I have a dataset of 364 people in a control group population and about 450 in one comparison group sample and 150 in another comparison group population. We're doing a full analysis of these data. We'...
Amy's user avatar
  • 11
2 votes
1 answer
55 views

Where to find patient responses on Rorschach's Inkblot test?

I am looking to find data that has patient's responses to Rorschach's inblots as well and their associated diagnosis ( Mainly looking into patients that have been diagnosed with schizophrenia, ...
Matt's user avatar
  • 21
1 vote
2 answers
443 views

Using the median for non parametric (Likert) data, when it gives you a decimal place

My colleague and I are working with non-parametric Likert data. We have been taking the median, but just realised that we are still getting values of say 2.5 or 1.5. Our justification for using the ...
JoshuaESummers's user avatar
1 vote
3 answers
236 views

EEG analysis free software?

I'm looking for free software for EEG data processing. What free or opensource software packages are available for analyzing raw EEG data?
Sharonas Ykm's user avatar
0 votes
0 answers
38 views

Reporting results of a Mann Whitney U test when the medians are equal

In the APA guidelines of reporting non-parametric tests they suggest reporting the median results when using non-parametric tests (http://evc-cit.info/psych018/Reporting_Statistics.pdf - search for '...
JoshuaESummers's user avatar
3 votes
2 answers
410 views

Is there a list of large-scale, free datasets with psychological variables?

Psychologists are not using large, existing, free data to its potential. We don't know what exists, what it contains, or how to use it without a huge investment. Secondary analysis of large, open ...
Cameron Brick's user avatar
1 vote
0 answers
61 views

Help understanding and visualizing the data from EEG grasp dataset from kaggle

So, I downloaded the EEG grasp data set from kaggle. I am having a hard time understanding the data and plotting it. I extracted the " first subjects' " csv files from the train folder which consists ...
roaibrain's user avatar
  • 129
1 vote
1 answer
31 views

What type of data can we get from fMRI to calculate correlations?

Lets say we want to compare the correlation between the activation one part of the brain and rise in value of other variable. The design would be within subjects. What is the data that we can receive ...
Borut Flis's user avatar
1 vote
0 answers
75 views

Data Cleaning - Stroop Test: Trying to find a paper than cleans the stroop test for individual questions

I am looking for papers that did data cleaning on stroop test results in terms of individual questions. For example, for an individual stroop test Q, remove results that took less than 200ms and more ...
Caffae's user avatar
  • 11
2 votes
1 answer
79 views

Open data for behavioral psychology experiment?

I have a model I'd like to compare to the Drift Diffusion model, which is commonly used to model response times and error rates in two-alternative forced-choice tasks. Lots of publications use the ...
tom's user avatar
  • 121
4 votes
0 answers
31 views

Where can I find the text of past DSM versions to visualize revision history?

I'm interested in building a data visualization to learn more about the history of the DSM. (I'm inspired by this visualization of the edit history of Darwin's "Origin of Species" by Ben Fry, as well ...
kradeki's user avatar
  • 141
1 vote
0 answers
31 views

Where can I find Data set for Machine Learning purposes?

I am currently doing a research in the attempt to detect onset sign of mental disorders through facial recognition. In order to do that, I would need training dataset which contains 1. Pictures 2. ...
Vidiskiu Fortino K's user avatar
2 votes
1 answer
439 views

How do I choose the correct sigma when applying a Gaussian filter to a fixation density map?

I am currently analysing some eye tracking data which I recorded in the lab. For my fixation density maps I calculate tables showing the number of times participants made a fixation at a specific ...
Anna's user avatar
  • 21
2 votes
1 answer
77 views

Study on the learning of programming concepts in pre-university students

I want to investigate the ability of a group of students to learn programming concepts in one hour. The students are grouped by ages: 6 - 17. The tasks are divided into concept and type. Each concept ...
Marina's user avatar
  • 145
4 votes
1 answer
445 views

How to ask in a survey for emotional vs. rational personality

In a survey I would like to find out the correlation between different factors based on the personal dimension "being more emotional vs. rational". Are there any known studies with items that could be ...
Peleke's user avatar
  • 141
3 votes
1 answer
1k views

What does fMRI data look like after pre-processing?

I wish to know what fMRI data looks like after preprocessing. My Understanding My understanding is that fMRI is MRI in time dimension that is we have repeated scans of brain volume. A voxel is a ...
Edison's user avatar
  • 171
3 votes
0 answers
38 views

Task-based fMRI dataset with very simple task (e.g. view stripes)

For my Bachelor thesis I need an fMRI dataset in order to look for causal relationships. I want to be able to confirm my work, so the causal relationships should already be known. Therefore, ideally ...
Katy's user avatar
  • 31
5 votes
3 answers
371 views

Should I look at the data of an experiment before the dataset is complete?

For a research internship I am running psychological experiments online. As it takes a while until the experiment is done (meaning that enough people participated, so that a sufficient sample size is ...
Mikkel Schöttner's user avatar
3 votes
0 answers
175 views

How does on one create a circumplex model (multiple answers)?

Given a list of points with arousal and valence rankings, what is the best way of showing them on a circumplex model, given that they are already tagged with 1 out of 7 selected emotions, are they ...
Ben Perlin's user avatar
4 votes
0 answers
54 views

Splitting EEG signal by marker using BrainVisionAnalyser

I have recorded a long EEG experiment with BrainVision equipment and I want to split it into smaller chunks based on marker numbers. For example, I want to have the chunk of recording between markers ...
MarieZ's user avatar
  • 41
1 vote
0 answers
128 views

How to work with EDA data in R environment? [duplicate]

I'm looking to pull EDA data from an Empatica e4 into R. I can find packages and code that will enable this in Python and Matlab (see this previous thread) but not R. I'm much more familiar with R and ...
Joe's user avatar
  • 11
4 votes
1 answer
451 views

How to look for correlations between heart rate and eda

I am looking for some advice on how to take heart rate (HR) and electro-dermal activity (EDA) data files collected via an Empatica e4 and look for correlation between them. My research project is ...
Jess's user avatar
  • 41
4 votes
0 answers
115 views

Noise free EEG signal data base

I am working on a research paper regarding EEG signal preprocessing. The first stage includes denoising the signal. However, since I need to evaluate the performance of the method I am using, I ...
Noha Hanafy's user avatar
5 votes
1 answer
101 views

Where can I find experimental data supportive of the Hick-Hyman law?

The Hick-Hyman law states that in a reaction-time experiment, the average reaction time of a human subject is a linear function of the average information $\sum -p \log p$, i.e. the entropy, contained ...
Arthur's user avatar
  • 151
2 votes
0 answers
142 views

Oblique EPI in afni

It is my very first time with afni and I am having problems with the creation of the afni dataset from dicom images. I runned: ...
Marta's user avatar
  • 53
4 votes
1 answer
766 views

How to randomise order of survey items in Qualtrics where some items have to appear together?

I have a quick question regarding survey construction that I'm hoping to get some clarification on. Here's my current survey set-up: Question 1 Question 1a (i.e., a question that relates to ...
qjacob's user avatar
  • 328
4 votes
1 answer
612 views

How to fit averaged data to obtain a single psychometric function?

I have psycho-physical data from a motion discrimination task in order to obtain PSE (point of subjective equality). I am using psignifit and have constructed individual psychometric logistic ...
Daphne 33's user avatar
1 vote
1 answer
88 views

Searching for real biological neuron firing data [numeric] [closed]

I am searching for real neuron firing data, so I can look at each neuron for fire timing (frequency) and incoming/outgoing signal-strength. I already found short youtube videos of real neuron firing ...
user avatar
1 vote
0 answers
47 views

Correcting for individual differences in the usage (employed range) of rating scales

Experiments that collect subjective ratings (e.g. on a Likert 1-7 scale) necessarily have to account for between-subjects differences in how the range of the rating scale is used by different people, ...
z8080's user avatar
  • 919
3 votes
1 answer
4k views

Open source software for analyzing Heart Rate Variability (HRV)

Heart rate variability (HRV), the change in the time intervals between adjacent heartbeats, is an emergent property of interdependent regulatory systems that operate on different time scales to adapt ...
Robin Kramer-ten Have's user avatar
9 votes
1 answer
20k views

What is the difference between RR-intervals and NN-intervals in HRV-data?

Heart rate variability (HRV) is often used as a measure of the sympathetic nervous system. One way to quantify HRV is by calculating the Inter-beat interval (IBI), also referred to as the RR-interval. ...
Robin Kramer-ten Have's user avatar
9 votes
1 answer
6k views

Open-source software for analyzing Electrodermal activity

Electrodermal activity (EDA) is a measure of the sympathetic activity, typically caused by stress or an emotional state. Analysis not a straightforward process like analysing reaction times. It ...
Robin Kramer-ten Have's user avatar
1 vote
1 answer
1k views

How to compare IAT (Implicit Association Test) results of two different groups?

I already have the recommended algorithm to analyse IAT data. It allows to compare within-subject differences in response latency in the congruent versus non-congruent condition. However, in addition ...
EsoEsMiNombre's user avatar
4 votes
2 answers
106 views

Implementation of Bayesian inference on cognitive science research question

To clarify, I am not talking about Bayesian model of cognition. That model refers to the theory that the human learning and inference approximately match Bayesian inference reasoning. (The two topics ...
Kenny Kim's user avatar
  • 368
5 votes
1 answer
464 views

In what order do you preprocess EEG data?

I am fairly new to EEG research and I am unsure what the best ordering is for preprocessing data. Do you correct for baseline and filter the data before you go on with artifact rejection/correction, ...
Robin Kramer-ten Have's user avatar
1 vote
1 answer
433 views

Research on Distribution of Enneagram Types in a Given Profession

I was in a conversation with an Enneagram scholar who claimed that certain Enneagram types are more likely to hold certain specific positions or have certain professions. Is there any data or has ...
Smovies's user avatar
  • 111