{
  "id": 7821,
  "title": "Make sure to get rid of trials with artifacts",
  "url": "/competitions/decoding-the-human-brain/discussion/7821",
  "author_name": "",
  "post_date": "2014-04-22T18:29:28.937Z",
  "votes": 2,
  "comment_count": 1,
  "views": 1622,
  "content": "<p>In addition to having a strong&nbsp;oscillation coupled to&nbsp;the AC power supply ~50Hz, on some trials, the electrodes have orders of magnitude larger than normal excursions (subjects moving around, experimenter touch wire etc.). &nbsp;For example, trial 535 for subject01.</p>\n\n<p>probably a good idea to get rid of these from the training.</p>",
  "messages": [
    {
      "id": "42737",
      "postDate": "04/22/2014 18:29:28",
      "content": "<p>In addition to having a strong&nbsp;oscillation coupled to&nbsp;the AC power supply ~50Hz, on some trials, the electrodes have orders of magnitude larger than normal excursions (subjects moving around, experimenter touch wire etc.). &nbsp;For example, trial 535 for subject01.</p>\n\n<p>probably a good idea to get rid of these from the training.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "42763",
      "postDate": "04/22/2014 22:20:31",
      "content": "<p>Hi,</p>\n<p>When preparing the datasets of the competition, we preferred to keep the pre-processing as simple as possible. For this reason some additional data cleaning might&nbsp;be useful, as you suggest. We do not expect a major impact on the results, though. Nevertheless we hope that the competition will exceed our expectations!</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 42763,
      "author_name": "emanuele",
      "author_url": "",
      "post_date": "04/22/2014 22:20:31",
      "content": "<p>Hi,</p>\n<p>When preparing the datasets of the competition, we preferred to keep the pre-processing as simple as possible. For this reason some additional data cleaning might&nbsp;be useful, as you suggest. We do not expect a major impact on the results, though. Nevertheless we hope that the competition will exceed our expectations!</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "42737": "",
    "42763": ""
  },
  "source": "meta"
}