https://crcns.org These are the search results for the query, showing results 421 to 435. https://crcns.org/marketplace/data-sets-wanted/282999896/440897371 Dear all CRNS community contributors, We're currently on the lookout for whole-cell membrane potential recordings of spontaneous activity (no specific sensory inputs, e.g. visual or auditory stimulation) obtained during anesthesia and wakefulness (quiet wakefulness alone or combination of quiet- and active wakefulness, e.g. locomotor activity-separated). These recordings is aimed for biophysical/mathematical interrogation of specific membrane potential activity dynamics and state change regimens employed by single neurons in vivo. If you have such data and are willing to share them with us, please do not hesitate to contact us and we can provide you further information on the project we aim to conduct using such data. Thank you advance.   Best regards Rune Rasmussen, DANDRITE, Aarhus University & Mathias Heltberg, Niels Bohr Institute, University of Copenhagen       No publisher Neurune 2017-09-13T09:38:37Z Comment https://crcns.org/forum/using-datasets/40401917/156433632 Hi, I have got an error when downloading the "vim-1" data. How can I download data?   Yongjie No publisher yozhu 2017-09-11T06:04:05Z Comment https://crcns.org/forum/using-datasets/190683764/634810534 Hi, while replicating the published analysis associated with vim-4 data, I am having difficulty figuring out how to use the 'mappers' function to spatially constrain the voxel activity. For example, subject S2 file contains response data from 48819 voxels, human (900, 48819) passive (900, 48819) vehicle (900, 48819) and in its corresponding mappers file, left and right maps seem to be of different lengths. pixmap_data (1216380,) pixmap_indices (1216380,) pixmap_indptr (1216516,) pixmap_shape (2,) pixmask (2060, 1024) vox_to_fsavg_left_data (168501,) vox_to_fsavg_left_indices (168501,) vox_to_fsavg_left_indptr (163843,) vox_to_fsavg_left_shape (2,) vox_to_fsavg_right_data (166959,) vox_to_fsavg_right_indices (166959,) vox_to_fsavg_right_indptr (163843,) vox_to_fsavg_right_shape (2,) Could some one help me with understanding how to properly use the 'mappers' function? Do I need to download a version of fsaverage? I don't actually need the exact cortical coordinate mapping for each individual voxel, rather the general brain region each voxel belongs to (similar to Figure 2 in Zhang et al. 2021. Voxel-based state space modeling recovers task-related cognitive states in naturalistic fMRI experiments. Frontiers in Neuroscience). Thank you.   No publisher xydeng 2023-08-31T05:50:10Z Comment https://crcns.org/forum/using-datasets/227434232/505702662 thank you!I want to detection spike,so I should find raw data and spike time. No publisher stubborn 2021-11-10T07:32:11Z Comment https://crcns.org/forum/using-datasets/194275864/489292504 I am not used to these data, I guess that for example for the WT type, there are 8 mousses recorded. And I found for example for mousse 1 (M1 ?) 23 spike trains, is that correct ? Does it correspond to 23 neurons of 23 recording ?  Thank you !  No publisher charlottedionblanc 2023-04-30T13:19:17Z Comment https://crcns.org/forum/using-datasets/147960392/179532180 I just tested and was able to load the file ok.  Matlab dialog is: >> load tenrawpos02.mat >> rawpos{2}{1} ans =    struct with fields:         data: [37341×5 double]       fields: 'timestamp x1 y1 x2 y2'     descript: {'position data from 7:47 to 28:34'}   I suspect the file you have is corrupted.  The size should match the following: >> ls -l tenrawpos02.mat -rw-r-x---  1 jt  staff  1080414 May 11 10:39 tenrawpos02.mat   md5 hash should be: $ md5 tenrawpos02.mat  MD5 (tenrawpos02.mat) = b680363ccc1fb32e61ef141b97f8a27d   If the size or md5 has do not match the above, the file is corrupt.  You need to delete the corrupt file and download it again. There have been reports that the automatic download script sometimes downloads an html page rather than a data file, and that would cause it to fail when trying to load into matlab.  So if you using that script, maybe that is what happened.  If so,  just delete the corrupt file (containing the html) and run the download script again and it will download the file again. No publisher jteeters 2019-05-11T17:54:55Z Comment https://crcns.org/forum/using-datasets/147960392/80571491 Hi,   I tried to load some of the mat files in the ch-6 data set to Matlab but I get the following error: "Error using load Unable to read MAT-file O:\...\tenrawpos02.mat. File might be corrupt." Does it need an special script for loading the data to Matlab?   It would be greatly appreciated if someone can help me with that!   No publisher rashidi 2019-05-08T11:17:46Z Comment https://crcns.org/forum/using-datasets/147960391/643764539 I think the reason is that these files contain the spike times of each of the 61 neurons.  There needs to be a different file for each neuron since they respond differently.  The first paper listed in the Readme file, i.e.: http://www.jneurosci.org/content/22/24/10811 indicates that there were 61 neurons, which corresponds to the 61 folders.     No publisher jteeters 2019-04-19T23:28:01Z Comment https://crcns.org/forum/using-datasets/147960391/810112078 Why are there different *msq1D.sa0 files in each of the 61 folders for 1D data? No publisher zhuokem 2019-04-17T18:34:00Z Comment https://crcns.org/forum/using-datasets/632035609/795555503 Dear expert,  I have downloaded the fcx-3 dataset, and read the position of all electrodes from the s<<subject number>>_MNI_grid file. However, the position seems to be described in head coordinates. We are wondering where we can get the MNI coordinates of each electrode, or if there is any way to convert the provided head coordinates into the MNI coordinates. Thank you so much! Jin Li No publisher JinLi 2020-10-07T06:13:48Z Comment https://crcns.org/forum/using-datasets/764310205/221164674 Thank you for your interest in the dataset! We are glad for this question, although I apologize that this aspect of the experiment data is not available.  We had two practical reasons, as well as a conceptual reason for not including the repeated data -- if I am remembering correctly. Practically: (1) the repeated data was recorded for only a subset of neurons in the study; and (2) quite difficult to use given fixation breaks and other detailed structure issues in the dataset, particularly for trying to getting this dataset in shape for public posting. Conceptually, while *seeming* to offer a more interpretable measure of cross-validated performance, I would argue that the R^2 values one gets for repeats in visual neuroscience experiments will have deeper interpretability issues, as we explored in further papers from our lab: Cui et al, J Neuroscience 2016) and McFarland et al, J Neuroscience, 2016. [Briefly, this concerns both the amount of "unexplainable" variability in each neuron; and (2) what is explainable versus unexplainable in the context of other factors such as eye movements and aspects of uncontrolled brain state. As a result, we only used it to generate the example figure and provide a "calibration" the more sensitive/accurate (but less familiar) performance measures of cross-validated log-likelihood (LLx). No publisher dbutts 2020-10-04T18:33:51Z Comment https://crcns.org/forum/using-datasets/390663487/121005482 hc-2 has a message saying " Note: A problem was discovered with this data set.  Please wait until the problem is fixed (this notice removed) before downloading.  Problem discovered on Feb. 1, 2010. " Does anyone have any details about the problem? ie Is it something specific that might only apply to parts of the data? Any idea when the problem might be resolved? No publisher istevenson 2010-10-27T17:56:04Z Comment https://crcns.org/forum/using-datasets/590854722/401340963 Are the matlab routines available anywhere? I'm looking to run some experiments on this data and any code that would ease loading and processing in matlab would be helpful. Thanks, Brandon No publisher bmayer 2010-04-30T03:07:10Z Comment https://crcns.org/forum/using-datasets/185205933/485519454 Hi Lanzai - I haven't actually looked at this dataset in several years, but I'm pretty sure the cluster ID would refer to individual neurons, not classes. The easiest way to make sure would be to check how many unique cluster ID's there are per data set: if there are more than 2 unique IDs then they refer to individual neurons given that, as far as I remember the only neural 'classes' described in the dataset are putative pyramidal and interneuron cells. Hope this helps. -Andres No publisher AGrosmark 2024-06-02T16:27:02Z Comment https://crcns.org/forum/using-datasets/267886582/203990523 I'm afraid that information is not available in the current data file formats. Because these experiments involved anesthesia, the time of day is not a typical consideration for recording with the data. Apologies for not being able to provide a more helpful response. No publisher msmith 2025-07-21T20:43:08Z Comment