Pasha van Bijlert
@PashavanBijlert
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PhD candidate 🇳🇱 @UUGeo & @Naturalis_sci | MSc @VU_FBW | Biomechanist & dino paleontologist | 3D reconstructions 📷:Tom Brown
the Netherlands
Joined July 2020
Most birds use a funny running style: grounded running. It's a paradox: GR costs more energy than normal running, but animals usually minimize costs. Do birds waste energy? We resolve this with a model of the emu (the best bird). 1st PhD chapter, out in @ScienceAdvances 1/17
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I'm recruiting a PhD student to join the lab at @GeorgiaTech in Fall 2026! Broad taxonomic and topical freedom under the umbrella of vertebrate joint form and function. Information here: https://t.co/9OcmKYrOLe – please share 🦴🩻
manafzadeh.com
Homepage for The Manafzadeh Lab at Georgia Tech
✨Some news✨: after finishing my postdoc, I’ll be starting my lab as an Assistant Professor at @GeorgiaTech. Join us in Atlanta to study how joints work and where they come from!
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Accidentally recreated a meme while recording an outreach video
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The github also links the preprint, the video tutorial, and the manual. You can do a lot in MuSkeMo (landmarks, reference frames, shape fitting, plotting moment arms, visualizing simulations, etc.). Thread about the horse paper here:
I promised I’d make a thread about it, so here goes - Are you interested in horses? Musculoskeletal modelling? Predictive simulations of quadrupedal gaits? Then this paper is for you! This made the cover of @ICB_journal ! With @tgeijten @Anneschulp Ineke Smit & Karl Bates
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I construct all my models using MuSkeMo, and after running simulations in OpenSim, I import the trajectories back into Blender for visualizations. MuSkeMo is not OpenSim specific, it also includes importers for Mujoco and Gaitsym. Available from Github:
github.com
Build and visualize musculoskeletal models in Blender - PashavanBijlert/MuSkeMo
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For everyone at #ISB2025 interested in musculoskeletal modeling, I'm giving a talk about MuSkeMo, my tool for musculoskeletal model construction and visualization in Blender - Tuesday 11:30 in Room A1 (Session 6A - Musculoskeletal Model Personalization).
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@SirBlameson @itsleviathanart The bird project focused on the legs, so I immobilised the neck. I wrote a paper on T. rex tail biomechanics, including our take on a walk cycle: https://t.co/uxDzExJwEk I think both neck and tail would sway up and down, because they are suspended by ligaments (like rubber bands)
MY FIRST PAPER! We've developed a method to estimate the preferred walking speed of dinosaurs (spoiler: T. rex wasn't that fast) With Knoek van Soest & @Anneschulp Check out those tail movements on Trix the T. rex (made with Rick Stikkelorum & Arthur Ulmann) #biomechanics 1/13
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The head bobbing section is based on Frost 1978 ( https://t.co/db2rgMD0GY) The second half of the video is based on our grounded running study: https://t.co/wRuHIYJ0KW
researchgate.net
PDF | SUMMARY 1. Head-bobbing of pigeons during walking and landing was studied using high-speed motion photography. 2. The analysis of film records... | Find, read and cite all the research you need...
Most birds use a funny running style: grounded running. It's a paradox: GR costs more energy than normal running, but animals usually minimize costs. Do birds waste energy? We resolve this with a model of the emu (the best bird). 1st PhD chapter, out in @ScienceAdvances 1/17
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Why do birds bob their heads? Why is their running style different to ours? Just want to see untrained chickens on a treadmill? Watch this new video! It's in Dutch, with English subtitles. Watch till the end to see me get interrupted by loud chickens https://t.co/GTDNMz9aZ0
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A short write up on our recent Lucy locomotion story in the @ConversationUK
https://t.co/3iMbO3k6t4 Many thanks to the whole team for their hard work on the paper! @PashavanBijlert @wisellers @SamCoatham @cbrassey @james_charles90. Work led by Karl Bates @LivEvoBiomech
theconversation.com
There has been much debate over the years as to exactly how “Lucy” walked.
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Applications are now open for a MRes with me to study locomotion in extant/extinct archosaurs, using 3D modelling and simulation! Following up on the #DAWNDINOS project. https://t.co/9hpCyd0z5s (UK citizens are easiest funding-wise)
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See the amazing covers of 2024 for ICB! featuring photography from Aaron Griffing Jackson R Phillips Ethan Staats Todd Green @PashavanBijlert & @BlackinMarSci marketing team https://t.co/j8gfm5vgZ2
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A review on #dinosaur locomotion in Biology Letters as part of the 200 years of dinosaurs special issue. #openaccess too: https://t.co/7DEdEMY3XV
royalsocietypublishing.org
Dinosaur locomotor biomechanics are of major interest. Locomotion of an animal affects many, if not most, aspects of life reconstruction, including behaviour, performance, ecology and appearance. Yet...
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Abstract submission for @SEBiology 2025 in Antwerp is officially OPEN 🦾 Submit your abstract now for the session A2: "Experimental Palaeobiology - Bringing Fossils Back to Life" 🦖🦕abstract submissions are open until Friday 7th March #SEB2025
sebiology.org
Abstract submissions will open from Monday 6th January until Friday 7th March 2025
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Emu simulations by @YutingTheEmu !!
Ever wondered how birds stand up? Our paper explores how emus use their muscles to stand up. We found that these large, flightless birds use large muscle fibre length changes, activations and forces. My 1st PhD chapter out now in @JEB! https://t.co/XpONXftdbi
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The simulations were performed in Gaitsym by Karl, which I visualized in Blender using my plugin MuSkeMo, which is available here: https://t.co/8BteBETNdK
github.com
Build and visualize musculoskeletal models in Blender - PashavanBijlert/MuSkeMo
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Tagging all the co-authors on twitter: @SamCoatham, @cbrassey, @james_charles90, @bones2bytes, @wisellers (and myself =) @ArchaeoAshleigh wrote an accompanying dispatch:
cell.com
Endurance running is thought as critical for the evolutionary success of hominins. A new study analysing the running skills of the famous ‘Lucy’ — Australopithecus afarensis — finds that they...
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New paper in @CellPressNews Current Biology by Karl Bates (@LivEvoBiomech) ea. Karl's physics simulations (validated in a human model) suggest that although Lucy could run - top speed was limited, not leaving much headroom for endurance running. https://t.co/NEglfCWulW
NEWS | @LivUni has led an international team of scientists to take a fresh look at the running capabilities of our early human ancestors🏃 Find out more⬇️ https://t.co/oUSLlcjlE1
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Forgot to link the actual paper https://t.co/OI2jwLryCa
academic.oup.com
Synopsis. Musculoskeletal simulations can provide insights into the underlying mechanisms that govern animal locomotion. In this study, we describe the dev
I promised I’d make a thread about it, so here goes - Are you interested in horses? Musculoskeletal modelling? Predictive simulations of quadrupedal gaits? Then this paper is for you! This made the cover of @ICB_journal ! With @tgeijten @Anneschulp Ineke Smit & Karl Bates
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And silly me, forgot to link the actual paper https://t.co/OI2jwLryCa
academic.oup.com
Synopsis. Musculoskeletal simulations can provide insights into the underlying mechanisms that govern animal locomotion. In this study, we describe the dev
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