Artin Arshamian
@artinarshamian.bsky.social
Associate Professor, Clinical Neuroscience, Karolinska Institutet. Pl of the Embodied Perception and Cognition Group. We study perception and cognition through the lens of olfaction and breathing. 👃👁️👂🧠 ❤️🫁
https://ki.se/en/people/artin-arshamian
https://ki.se/en/people/artin-arshamian
Came up with this exact system over the summer too! It is working great. I’ve killed every single project. Productivity is nonexistent. But still not sure how to break this to my collaborators😬
July 18, 2025 at 3:22 PM
Came up with this exact system over the summer too! It is working great. I’ve killed every single project. Productivity is nonexistent. But still not sure how to break this to my collaborators😬
Interesting question! We don’t think this effect is related to the physical movement. We believe it's entirely driven by brainstem preBötC interneurons (oscillators) even without breathing movement. Animal studies are needed to confirm, but I'd bet on it.
February 27, 2025 at 11:53 AM
Interesting question! We don’t think this effect is related to the physical movement. We believe it's entirely driven by brainstem preBötC interneurons (oscillators) even without breathing movement. Animal studies are needed to confirm, but I'd bet on it.
The PRP is unique in that it is cyclical, ever-present, and requires no external stimulus. Check out our paper: physoc.onlinelibrary.wiley.com/doi/full/10....
The pupillary respiratory‐phase response: pupil size is smallest around inhalation onset and largest during exhalation
Abstract figure legend Across five experiments including 203 participants and a wide range of experimental conditions we demonstrate that pupil size fluctuates in a systematic manner over the course ...
physoc.onlinelibrary.wiley.com
February 21, 2025 at 2:42 PM
The PRP is unique in that it is cyclical, ever-present, and requires no external stimulus. Check out our paper: physoc.onlinelibrary.wiley.com/doi/full/10....
Great news and well deserved!
July 18, 2024 at 9:28 AM
Great news and well deserved!
5/5 The moral of the story: ALWAYS pre-register and replicate your cool findings if possible. Presume that you are wrong, even if your data tells you otherwise. #neuroskyence #psychology #neuroscience
May 16, 2024 at 12:22 PM
5/5 The moral of the story: ALWAYS pre-register and replicate your cool findings if possible. Presume that you are wrong, even if your data tells you otherwise. #neuroskyence #psychology #neuroscience
4/5 We pre-registered the finding and conducted a new experiment with 142 subjects (power of 0.91%). The result? No replication and substantial evidence for the null!
May 16, 2024 at 12:22 PM
4/5 We pre-registered the finding and conducted a new experiment with 142 subjects (power of 0.91%). The result? No replication and substantial evidence for the null!
3/5 An exploratory analysis revealed a beneficial effect on memory approximately 1 second after inhalation onset. The story could have ended here. With 72 subjects, this was a large study and a cool finding that could be easily published in good journal. But we didn’t stop there.
May 16, 2024 at 12:22 PM
3/5 An exploratory analysis revealed a beneficial effect on memory approximately 1 second after inhalation onset. The story could have ended here. With 72 subjects, this was a large study and a cool finding that could be easily published in good journal. But we didn’t stop there.
2/5 In Experiment 1 (n=72), subjects engaged in a rapid serial visual presentation (RSVP) paradigm to test if memory performance differed between inhalation and exhalation. Results? No difference when stimuli were presented at the start of inhalation.
May 16, 2024 at 12:21 PM
2/5 In Experiment 1 (n=72), subjects engaged in a rapid serial visual presentation (RSVP) paradigm to test if memory performance differed between inhalation and exhalation. Results? No difference when stimuli were presented at the start of inhalation.
Exactly. I looked at Fig. 4A and just wondered if the “predicted values” that are not correlated with chronological age is just noise or if there is something real there that reflects biological aging. Does the Cam-CAN have other relevant info to compare with? Either way very cool study!
May 16, 2024 at 9:35 AM
Exactly. I looked at Fig. 4A and just wondered if the “predicted values” that are not correlated with chronological age is just noise or if there is something real there that reflects biological aging. Does the Cam-CAN have other relevant info to compare with? Either way very cool study!
Super cool! Is possible to compare the young people predicted to be old (e.g., 20 -> 50) and old predicted to be young (e.g., 80 -> 50) on other measurement? Like, e.g., underlying structural differences? That could be a marker for the difference between biological vs chronological aging.
May 14, 2024 at 1:34 PM
Super cool! Is possible to compare the young people predicted to be old (e.g., 20 -> 50) and old predicted to be young (e.g., 80 -> 50) on other measurement? Like, e.g., underlying structural differences? That could be a marker for the difference between biological vs chronological aging.
Have this on our next JC :)😀
April 2, 2024 at 11:59 AM
Have this on our next JC :)😀
This looks great! Cool study; I think I will suggest my (i.e., force) students to read it before they do their judgments of learning tasks for their exams!
January 31, 2024 at 1:08 PM
This looks great! Cool study; I think I will suggest my (i.e., force) students to read it before they do their judgments of learning tasks for their exams!
We show that while performance is not affected it does influence response bias and modulate brain activity during encoding. If you're fascinated by breathing and brain science, check out our open paper.
December 8, 2023 at 2:19 PM
We show that while performance is not affected it does influence response bias and modulate brain activity during encoding. If you're fascinated by breathing and brain science, check out our open paper.