Nuno De Sá Teixeira
@nunodesateixeira.bsky.social
Assistant Professor in Experimental Psychology and Researcher on Psychophysics and Visual Perception.
Avid reader of non-fiction.
Amateur astrophotographer, fencer, and musician.
Avid reader of non-fiction.
Amateur astrophotographer, fencer, and musician.
If books were people, I’d introduce these two to each other. I’m sure they’d get along perfectly; and I enjoyed spending time with both.
February 5, 2026 at 6:18 PM
If books were people, I’d introduce these two to each other. I’m sure they’d get along perfectly; and I enjoyed spending time with both.
I’ve largely removed autostereograms from my perception classes over the years (one token example still remains just to acknowledge its existence), so I’m genuinely excited to try your hack this semester. Thanks for the excellent tutorial!
February 5, 2026 at 1:43 PM
I’ve largely removed autostereograms from my perception classes over the years (one token example still remains just to acknowledge its existence), so I’m genuinely excited to try your hack this semester. Thanks for the excellent tutorial!
It took just over 24 hours to print, and I had to use whatever colours I had available, but it could be helpful for hands-on students.
The 3D model can be found here: www.printables.com/model/207798...
The 3D model can be found here: www.printables.com/model/207798...
January 16, 2026 at 3:08 PM
It took just over 24 hours to print, and I had to use whatever colours I had available, but it could be helpful for hands-on students.
The 3D model can be found here: www.printables.com/model/207798...
The 3D model can be found here: www.printables.com/model/207798...
Reposted by Nuno De Sá Teixeira
New episode about the thing that happened, the reaction to it, and the reaction to the reaction to the thing that happened.
youtu.be/nD3rSA4FSqk?...
youtu.be/nD3rSA4FSqk?...
... Can We Talk? - SOME MORE NEWS
YouTube video by Some More News
youtu.be
October 3, 2025 at 4:30 PM
New episode about the thing that happened, the reaction to it, and the reaction to the reaction to the thing that happened.
youtu.be/nD3rSA4FSqk?...
youtu.be/nD3rSA4FSqk?...
A new addition to my personal library, thanks to Bluesky's #visionscience community (even if in the sequence of a sad new).
September 17, 2025 at 11:55 AM
A new addition to my personal library, thanks to Bluesky's #visionscience community (even if in the sequence of a sad new).
So, basically - and for those who didn't know it - yes, trans people exist and they are like anyone else: they love, they smile and cry, they care for their loved ones, they collaborate with authorities, and (importantly) they DID NOT incite violence. Can media stop talking about trans now?
September 16, 2025 at 10:44 PM
So, basically - and for those who didn't know it - yes, trans people exist and they are like anyone else: they love, they smile and cry, they care for their loved ones, they collaborate with authorities, and (importantly) they DID NOT incite violence. Can media stop talking about trans now?
Thank you all for the great feedback and insightful questions on my poster "Exploring Action-Specific Effects: A Representational Momentum Study of the ‘Pong Effect’" at #ECVP2025. It was a wonderful conference and I am already looking forward to the next one!
August 28, 2025 at 2:07 PM
Thank you all for the great feedback and insightful questions on my poster "Exploring Action-Specific Effects: A Representational Momentum Study of the ‘Pong Effect’" at #ECVP2025. It was a wonderful conference and I am already looking forward to the next one!
Shout-out to Rodrigo Freita's presentation of our work "Dynamic events as a natural cause for the Onset Repulsion Effect" at #ECVP2025. We had a great feedback and fruitful discussions.
August 26, 2025 at 3:18 PM
Shout-out to Rodrigo Freita's presentation of our work "Dynamic events as a natural cause for the Onset Repulsion Effect" at #ECVP2025. We had a great feedback and fruitful discussions.
It's taking me forever to read this book because my brain insists in emulating Bernie's distinctive voice tone...
July 28, 2025 at 2:59 PM
It's taking me forever to read this book because my brain insists in emulating Bernie's distinctive voice tone...
I find it particularly funny how it always seems to be in a rush to plot stuff and you have to keep telling it to "hold on" XD
July 7, 2025 at 9:33 PM
I find it particularly funny how it always seems to be in a rush to plot stuff and you have to keep telling it to "hold on" XD
Reposted by Nuno De Sá Teixeira
Here's our new episode about that guy trying to talk. Alternate title is "The Right-Wing War On Words", but we couldn't resist.
youtu.be/1yjIeZCddUQ?...
youtu.be/1yjIeZCddUQ?...
LOL Jordan Peterson - SOME MORE NEWS
YouTube video by Some More News
youtu.be
July 2, 2025 at 7:17 PM
Here's our new episode about that guy trying to talk. Alternate title is "The Right-Wing War On Words", but we couldn't resist.
youtu.be/1yjIeZCddUQ?...
youtu.be/1yjIeZCddUQ?...
Yesterday was our "Illusion Day", with interactive demonstrations of classic perceptual illusions made by my students of Attention&Perception. It was the first time I attempted this activity with a class and it was definitely a success! Will repeat it next year! (more illusions in the comments)
June 6, 2025 at 11:14 AM
Yesterday was our "Illusion Day", with interactive demonstrations of classic perceptual illusions made by my students of Attention&Perception. It was the first time I attempted this activity with a class and it was definitely a success! Will repeat it next year! (more illusions in the comments)
It is my conviction that the time required for a Matlab script to finish is directly proportional to its understandability (or, stated differently, the most efficient scripts are necessarily more obscure and harder to understand)
April 15, 2025 at 2:52 PM
It is my conviction that the time required for a Matlab script to finish is directly proportional to its understandability (or, stated differently, the most efficient scripts are necessarily more obscure and harder to understand)
This is the output of my modest Matlab implementation of Marr&Poggio's cooperative algorithm for stereo disparity.
With less than 100 lines of code, it is not efficient, the parameters need to be tweaked for each simulation and only works in Flatland, but it makes the core ideas clear for students.
With less than 100 lines of code, it is not efficient, the parameters need to be tweaked for each simulation and only works in Flatland, but it makes the core ideas clear for students.
April 13, 2025 at 12:40 PM
This is the output of my modest Matlab implementation of Marr&Poggio's cooperative algorithm for stereo disparity.
With less than 100 lines of code, it is not efficient, the parameters need to be tweaked for each simulation and only works in Flatland, but it makes the core ideas clear for students.
With less than 100 lines of code, it is not efficient, the parameters need to be tweaked for each simulation and only works in Flatland, but it makes the core ideas clear for students.
Trumps' administration rescinded a program with Portuguese Universities (including the one where I work) along with a questionnaire on ideological issues (women's rights, equity, inclusion, global warming, etc), hinting that continuation of the program hinges on giving the "right" answers... 😡
Questionário da Administração Trump também foi recebido pela FLUL, com perguntas sobre “agendas climáticas”, “contactos com partidos comunistas e socialistas” e relações com ONU, China, Irão e Rússia.
EUA enviam questionário ideológico a universidades lusas e cancelam programa com o Técnico
Questionário da Administração Trump também foi recebido pela FLUL, com perguntas sobre “agendas climáticas”, “contactos com partidos comunistas e socialistas” e relações com ONU, China, Irão e Rússia.
www.publico.pt
April 11, 2025 at 10:20 AM
Trumps' administration rescinded a program with Portuguese Universities (including the one where I work) along with a questionnaire on ideological issues (women's rights, equity, inclusion, global warming, etc), hinting that continuation of the program hinges on giving the "right" answers... 😡
Well, I "stole" two coloured balls from my toddler to use as part of one experiment we're about to run...
March 20, 2025 at 4:37 PM
Well, I "stole" two coloured balls from my toddler to use as part of one experiment we're about to run...
When your father is a vision scientist and has a knack for building classroom perception demonstrations...
March 19, 2025 at 1:16 PM
When your father is a vision scientist and has a knack for building classroom perception demonstrations...
Also, the pinhole must be really tiny, otherwise it really doesn't work unless the person looks at it the right way... Other than that, it's just a box divided into two sections - the farthest one with no ceiling (to allow the light inside)
March 15, 2025 at 4:43 PM
Also, the pinhole must be really tiny, otherwise it really doesn't work unless the person looks at it the right way... Other than that, it's just a box divided into two sections - the farthest one with no ceiling (to allow the light inside)
@bjbalas.bsky.social , thank you! :) To be honest, this was just a first attempt, with lots of improvising as I went along. I learned that it is much easier to make the pinhole first and glue the bits of paper afterward (while peeking through the hole).
March 15, 2025 at 4:41 PM
@bjbalas.bsky.social , thank you! :) To be honest, this was just a first attempt, with lots of improvising as I went along. I learned that it is much easier to make the pinhole first and glue the bits of paper afterward (while peeking through the hole).
In preparation for my Perception class this next week, on lightness and colour constancy, I made a cardboard model of the 1977 Gilchrist's experiment.
Left - the opened box, with equal illumination
Right - view through the pinhole (the white target now seems black)
#VisionScience
Left - the opened box, with equal illumination
Right - view through the pinhole (the white target now seems black)
#VisionScience
March 15, 2025 at 4:24 PM
In preparation for my Perception class this next week, on lightness and colour constancy, I made a cardboard model of the 1977 Gilchrist's experiment.
Left - the opened box, with equal illumination
Right - view through the pinhole (the white target now seems black)
#VisionScience
Left - the opened box, with equal illumination
Right - view through the pinhole (the white target now seems black)
#VisionScience
Well, at least, exercise wise, Republicans are done for the week. No need for more squats in the next few days. #stateoftheunion
March 5, 2025 at 2:58 AM
Well, at least, exercise wise, Republicans are done for the week. No need for more squats in the next few days. #stateoftheunion