ActivityPub Viewer

A small tool to view real-world ActivityPub objects as JSON! Enter a URL or username from Mastodon or a similar service below, and we'll send a request with the right Accept header to the server to view the underlying object.

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{ "@context": [ "https://www.w3.org/ns/activitystreams", { "ostatus": "http://ostatus.org#", "atomUri": "ostatus:atomUri", "inReplyToAtomUri": "ostatus:inReplyToAtomUri", "conversation": "ostatus:conversation", "sensitive": "as:sensitive", "toot": "http://joinmastodon.org/ns#", "votersCount": "toot:votersCount", "blurhash": "toot:blurhash", "focalPoint": { "@container": "@list", "@id": "toot:focalPoint" }, "Hashtag": "as:Hashtag" } ], "id": "https://mastodon.social/users/MatteoCarandini/collections/featured", "type": "OrderedCollection", "totalItems": 4, "orderedItems": [ { "id": "https://mastodon.social/users/MatteoCarandini/statuses/111788464790125885", "type": "Note", "summary": null, "inReplyTo": null, "published": "2024-01-20T13:16:43Z", "url": "https://mastodon.social/@MatteoCarandini/111788464790125885", "attributedTo": "https://mastodon.social/users/MatteoCarandini", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/MatteoCarandini/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/MatteoCarandini/statuses/111788464790125885", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2024-01-20:objectId=624370329:objectType=Conversation", "content": "<p>Back in the 90s, when I was in grad school, sensory decisions were analyzed with “signal detection theory”. Since then, many have found it more fruitful to use logistic classification: the observer weighs the factors, uses their sum to bias a coin, and flips the coin. </p><p>However, a student starting today would find the relevant information scattered around. To fix this, I wrote “Sensory choices as logistic classification&quot;: <a href=\"https://www.biorxiv.org/content/10.1101/2024.01.17.576029v1\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">biorxiv.org/content/10.1101/20</span><span class=\"invisible\">24.01.17.576029v1</span></a>. If you have suggestions, please let me know!</p>", "contentMap": { "en": "<p>Back in the 90s, when I was in grad school, sensory decisions were analyzed with “signal detection theory”. Since then, many have found it more fruitful to use logistic classification: the observer weighs the factors, uses their sum to bias a coin, and flips the coin. </p><p>However, a student starting today would find the relevant information scattered around. To fix this, I wrote “Sensory choices as logistic classification&quot;: <a href=\"https://www.biorxiv.org/content/10.1101/2024.01.17.576029v1\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">biorxiv.org/content/10.1101/20</span><span class=\"invisible\">24.01.17.576029v1</span></a>. If you have suggestions, please let me know!</p>" }, "updated": "2024-01-20T13:28:36Z", "attachment": [ { "type": "Document", "mediaType": "image/png", "url": "https://files.mastodon.social/media_attachments/files/111/788/400/351/738/951/original/6a97ed0d83798e0f.png", "name": "A \"graphical abstract\" of the paper, showing a cartoon of a logistic classifier, and two examples of fits by the model, with traditional psychometric curves on the left and log odds representations on the right.", "blurhash": "UAS6Plt6xu%L~pRkofRkD%jZofs:V@ayofof", "focalPoint": [ 0.07, 0.86 ], "width": 1512, "height": 1814 } ], "tag": [], "replies": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/111788464790125885/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/MatteoCarandini/statuses/111788464790125885/replies?min_id=111788496141120995&page=true", "partOf": "https://mastodon.social/users/MatteoCarandini/statuses/111788464790125885/replies", "items": [ "https://mastodon.social/users/MatteoCarandini/statuses/111788496141120995" ] } }, "likes": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/111788464790125885/likes", "type": "Collection", "totalItems": 32 }, "shares": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/111788464790125885/shares", "type": "Collection", "totalItems": 32 } }, { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109660603487580716", "type": "Note", "summary": null, "inReplyTo": null, "published": "2023-01-09T18:13:37Z", "url": "https://mastodon.social/@MatteoCarandini/109660603487580716", "attributedTo": "https://mastodon.social/users/MatteoCarandini", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/MatteoCarandini/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/MatteoCarandini/statuses/109660603487580716", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2023-01-09:objectId=375581533:objectType=Conversation", "content": "<p>Visual cortex is affected by sounds. Does this mean it is multisensory? Does it represent sounds? </p><p>Today in Nature <a href=\"https://mastodon.social/tags/Neuroscience\" class=\"mention hashtag\" rel=\"tag\">#<span>Neuroscience</span></a> (<a href=\"https://doi.org/10.1038/s41593-022-01227-x\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">doi.org/10.1038/s41593-022-012</span><span class=\"invisible\">27-x</span></a>) Célian Bimbard and team find otherwise.</p><p>Sound-evoked activity in visual cortex was similar across neurons. Even neurons in hippocampus. It persisted after we cut fibers from auditory cortex!<br /> <br />This activity was predicted by… subtle body movements evoked by the sounds. It reflects brainwide state and behavior signals. </p><p><a href=\"https://mastodon.social/tags/NeuroNewPaper\" class=\"mention hashtag\" rel=\"tag\">#<span>NeuroNewPaper</span></a></p>", "contentMap": { "en": "<p>Visual cortex is affected by sounds. Does this mean it is multisensory? Does it represent sounds? </p><p>Today in Nature <a href=\"https://mastodon.social/tags/Neuroscience\" class=\"mention hashtag\" rel=\"tag\">#<span>Neuroscience</span></a> (<a href=\"https://doi.org/10.1038/s41593-022-01227-x\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">doi.org/10.1038/s41593-022-012</span><span class=\"invisible\">27-x</span></a>) Célian Bimbard and team find otherwise.</p><p>Sound-evoked activity in visual cortex was similar across neurons. Even neurons in hippocampus. It persisted after we cut fibers from auditory cortex!<br /> <br />This activity was predicted by… subtle body movements evoked by the sounds. It reflects brainwide state and behavior signals. </p><p><a href=\"https://mastodon.social/tags/NeuroNewPaper\" class=\"mention hashtag\" rel=\"tag\">#<span>NeuroNewPaper</span></a></p>" }, "attachment": [ { "type": "Document", "mediaType": "video/mp4", "url": "https://files.mastodon.social/media_attachments/files/109/660/592/598/134/144/original/3c2ba9692e6f96f3.mp4", "name": "An animated cartoon showing (1) the waveforms of four sounds; (2) the neural activity that those sounds evoke in visual cortex; (3) the body movements evoked by the sounds. The traces for the neural activity and for the body movements are very similar.", "blurhash": "U4Ss50~qRjRjRjj[RjM{?bM{oft7?bxuxuxu", "focalPoint": [ -0.64, 0.02 ], "width": 1200, "height": 686 } ], "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/neuroscience", "name": "#neuroscience" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/neuronewpaper", "name": "#neuronewpaper" } ], "replies": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109660603487580716/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/MatteoCarandini/statuses/109660603487580716/replies?min_id=109660677266744680&page=true", "partOf": "https://mastodon.social/users/MatteoCarandini/statuses/109660603487580716/replies", "items": [ "https://mastodon.social/users/MatteoCarandini/statuses/109660677266744680" ] } }, "likes": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109660603487580716/likes", "type": "Collection", "totalItems": 91 }, "shares": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109660603487580716/shares", "type": "Collection", "totalItems": 97 } }, { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109591168636172446", "type": "Note", "summary": null, "inReplyTo": "https://universeodon.com/users/markkula/statuses/109550339682712104", "published": "2022-12-28T11:55:25Z", "url": "https://mastodon.social/@MatteoCarandini/109591168636172446", "attributedTo": "https://mastodon.social/users/MatteoCarandini", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/MatteoCarandini/followers", "https://universeodon.com/users/markkula", "https://nerdculture.de/users/KathaSchmack", "https://qoto.org/users/albertcardona", "https://mastodon.world/users/kanoldlab", "https://mastodon.ie/users/rhodricusack", "https://sigmoid.social/users/antoniolozano", "https://mastodon.social/users/jmgrohneuro" ], "sensitive": false, "atomUri": "https://mastodon.social/users/MatteoCarandini/statuses/109591168636172446", "inReplyToAtomUri": "https://universeodon.com/users/markkula/statuses/109550339682712104", "conversation": "tag:mastodon.social,2022-11-20:objectId=337764666:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://universeodon.com/@markkula\" class=\"u-url mention\">@<span>markkula</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://nerdculture.de/@KathaSchmack\" class=\"u-url mention\">@<span>KathaSchmack</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://qoto.org/@albertcardona\" class=\"u-url mention\">@<span>albertcardona</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.world/@kanoldlab\" class=\"u-url mention\">@<span>kanoldlab</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.ie/@rhodricusack\" class=\"u-url mention\">@<span>rhodricusack</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://sigmoid.social/@antoniolozano\" class=\"u-url mention\">@<span>antoniolozano</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.social/@jmgrohneuro\" class=\"u-url mention\">@<span>jmgrohneuro</span></a></span> Thanks for the encouragement! I have refined those &quot;tips for writing science&quot; and they are now published in eNeuro (<a href=\"https://www.eneuro.org/content/9/6/ENEURO.0497-22.2022\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">eneuro.org/content/9/6/ENEURO.</span><span class=\"invisible\">0497-22.2022</span></a>). I hope they will be useful to some fellow scientists, and especially trainees.</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://universeodon.com/@markkula\" class=\"u-url mention\">@<span>markkula</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://nerdculture.de/@KathaSchmack\" class=\"u-url mention\">@<span>KathaSchmack</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://qoto.org/@albertcardona\" class=\"u-url mention\">@<span>albertcardona</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.world/@kanoldlab\" class=\"u-url mention\">@<span>kanoldlab</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.ie/@rhodricusack\" class=\"u-url mention\">@<span>rhodricusack</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://sigmoid.social/@antoniolozano\" class=\"u-url mention\">@<span>antoniolozano</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.social/@jmgrohneuro\" class=\"u-url mention\">@<span>jmgrohneuro</span></a></span> Thanks for the encouragement! I have refined those &quot;tips for writing science&quot; and they are now published in eNeuro (<a href=\"https://www.eneuro.org/content/9/6/ENEURO.0497-22.2022\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">eneuro.org/content/9/6/ENEURO.</span><span class=\"invisible\">0497-22.2022</span></a>). I hope they will be useful to some fellow scientists, and especially trainees.</p>" }, "attachment": [ { "type": "Document", "mediaType": "image/jpeg", "url": "https://files.mastodon.social/media_attachments/files/109/591/157/628/030/192/original/08b6c6211ed3e196.jpg", "name": "The first page of the article titled \"Some tips for writing science\", available at this link: https://doi.org/10.1523/ENEURO.0497-22.2022", "blurhash": "UDQvwRIot7ay~qNGWBof?bRjfQof.8M{f6t7", "focalPoint": [ -0.84, 0.81 ], "width": 1057, "height": 1063 } ], "tag": [ { "type": "Mention", "href": "https://universeodon.com/users/markkula", "name": "@markkula@universeodon.com" }, { "type": "Mention", "href": "https://nerdculture.de/users/KathaSchmack", "name": "@KathaSchmack@nerdculture.de" }, { "type": "Mention", "href": "https://qoto.org/users/albertcardona", "name": "@albertcardona@qoto.org" }, { "type": "Mention", "href": "https://mastodon.world/users/kanoldlab", "name": "@kanoldlab@mastodon.world" }, { "type": "Mention", "href": "https://mastodon.ie/users/rhodricusack", "name": "@rhodricusack@mastodon.ie" }, { "type": "Mention", "href": "https://sigmoid.social/users/antoniolozano", "name": "@antoniolozano@sigmoid.social" }, { "type": "Mention", "href": "https://mastodon.social/users/jmgrohneuro", "name": "@jmgrohneuro" } ], "replies": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109591168636172446/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/MatteoCarandini/statuses/109591168636172446/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/MatteoCarandini/statuses/109591168636172446/replies", "items": [] } }, "likes": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109591168636172446/likes", "type": "Collection", "totalItems": 7 }, "shares": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109591168636172446/shares", "type": "Collection", "totalItems": 10 } }, { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109320582537493890", "type": "Note", "summary": null, "inReplyTo": null, "published": "2022-11-10T17:01:49Z", "url": "https://mastodon.social/@MatteoCarandini/109320582537493890", "attributedTo": "https://mastodon.social/users/MatteoCarandini", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/MatteoCarandini/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/MatteoCarandini/statuses/109320582537493890", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2022-11-10:objectId=329298128:objectType=Conversation", "content": "<p>Back in 1996 I spent a month working with Horace Barlow (!) and he told me an interesting fact: after the war (I guess in the 1950s) he&#39;d go to Soho in London to buy electronics discarded by the British military. He was particularly interested in boxes that contained a (fancy) photosensor aimed at a (cheap) light bulb. He explained why the British military had those boxes, and it&#39;s fascinating. Care to guess why? ( if you already know the answer, please hold your tongue as it may spoil the fun)</p>", "contentMap": { "en": "<p>Back in 1996 I spent a month working with Horace Barlow (!) and he told me an interesting fact: after the war (I guess in the 1950s) he&#39;d go to Soho in London to buy electronics discarded by the British military. He was particularly interested in boxes that contained a (fancy) photosensor aimed at a (cheap) light bulb. He explained why the British military had those boxes, and it&#39;s fascinating. Care to guess why? ( if you already know the answer, please hold your tongue as it may spoil the fun)</p>" }, "attachment": [], "tag": [], "replies": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109320582537493890/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/MatteoCarandini/statuses/109320582537493890/replies?min_id=109322040428875432&page=true", "partOf": "https://mastodon.social/users/MatteoCarandini/statuses/109320582537493890/replies", "items": [ "https://mastodon.social/users/MatteoCarandini/statuses/109322040428875432" ] } }, "likes": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109320582537493890/likes", "type": "Collection", "totalItems": 49 }, "shares": { "id": "https://mastodon.social/users/MatteoCarandini/statuses/109320582537493890/shares", "type": "Collection", "totalItems": 41 } } ] }