Questions tagged [neuroscience]

A field of science that studies nervous systems. Use [neuroimaging] tag for questions about fMRI data analysis.

Filter by
Sorted by
Tagged with
2
votes
1answer
207 views

Nonparametric changepoint detection for a point process

I have a bunch of point processes that are generated by some unknown model. There is a marked pause that seems to begin and end at the same time in each process. I would like to measure this pause. I ...
0
votes
3answers
7k views

How to interpret this autocorrelogram graph?

I am new to statistics. I found a script which makes a autocorrelogram graph(see attached) of spike timings of a neuron. I got the graph but I am not able to interpret it. Matlab Code below. ...
1
vote
1answer
82 views

Statistical test for the difference in center positions of two receptive fields

I am a neuroscientist, and have neuronal response measurements for a large range of stimuli delivered to my subjects. I use this data to construct receptive fields (RFs), which show the mean response ...
19
votes
4answers
2k views

Non-transitivity of correlation: correlations between gender and brain size and between brain size and IQ, but no correlation between gender and IQ

I found a following explanation on a blog and I would like to get more information about the non-transitivity of correlation: We have the following indisputable facts: On average, there is a ...
2
votes
2answers
2k views

Sparse coding vs. sparse PCA, are they the same thing?

Are they the same thing? If not, could someone possibly explain the difference or point to the seminal papers describing the approaches? I am looking not for a detailed technical exposition, but a ...
20
votes
2answers
18k views

How to interpret PCA on time-series data?

I am trying to understand the use of PCA in a recent journal article titled "Mapping brain activity at scale with cluster computing" Freeman et al., 2014 (free pdf available on the lab website). They ...

1
2