Identification of movie encoding neurons enables movie recognition AI DOI Creative Commons
Masaki Hiramoto, Hollis T. Cline

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(48)

Published: Nov. 19, 2024

Natural visual scenes are dominated by spatiotemporal image dynamics, but how the system integrates “movie” information over time is unclear. We characterized optic tectal neuronal receptive fields using sparse noise stimuli and reverse correlation analysis. Neurons recognized movies of ~200-600 ms durations with defined start stop stimuli. Movie from to responses were tuned sensory experience though a hierarchical algorithm. encoded families sequences following trigonometric functions. Spike sequence flow suggest that repetitive circuit motifs underlie movie detection. Principles frog topographic retinotectal plasticity cortical simple cells employed in machine learning networks for static recognition, suggesting discoveries principles encoding brain, such as duration encoded, may benefit recognition technology. built trained network mimicked neural encoders. The network, named MovieNet, outperformed current classifying natural scenes, while reducing data size steps complete classification task. This study reveals brain demonstrates brain-based processing enable efficient learning.

Language: Английский

Active vision in freely moving marmosets using head-mounted eye tracking DOI Creative Commons
Vikram Pal Singh,

Jingwen Li,

Kyle Dawson

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2025, Volume and Issue: 122(6)

Published: Feb. 3, 2025

Our understanding of how vision functions as primates actively navigate the real-world is remarkably sparse. As most data have been limited to chaired and typically head-restrained animals, synergistic interactions different motor actions/plans inherent active sensing—e.g., eyes, head, posture, movement, etc.—on visual perception are largely unknown. To address this considerable gap in knowledge, we developed an innovative wireless head-mounted eye-tracking system that performs Chair-free Eye-Recording using Backpack mounted micROcontrollers (CEREBRO) for small mammals, such marmoset monkeys. Because eye illumination environment lighting change continuously natural contexts, a segmentation artificial neural network perform robust pupil tracking these conditions. Leveraging investigate vision, demonstrate although freely moving marmosets exhibit frequent compensatory movements equivalent other primates, including humans, predictability behavior (gaze) higher when animals relative they head-fixed. Moreover, despite increases eye/head-motion during locomotion, gaze stabilization remains steady because increase vestibularocular reflex gain locomotion. These results efficient, dynamic visuo-motor mechanisms related behaviors enable stable, high-resolution foveal explore world.

Language: Английский

Citations

1
Arbovirus impact on mosquito behavior: the jury is still out DOI Creative Commons
Théo Maire, Louis Lambrechts, Felix J.H. Hol

et al.

Trends in Parasitology, Journal Year: 2024, Volume and Issue: 40(4), P. 292 - 301

Published: Feb. 28, 2024

Language: Английский

Citations

7
Optimisation of supercritical fluid extraction of orange (Citrus sinenis L.) peel essential oil and its physicochemical properties DOI Creative Commons

Wen Xia Ling Felicia,

Kobun Rovina,

Nasir Md Nur ‘Aqilah

et al.

Current Research in Green and Sustainable Chemistry, Journal Year: 2024, Volume and Issue: 8, P. 100410 - 100410

Published: Jan. 1, 2024

In this study, the choice of supercritical fluid extraction as a renewable alternative for extracting orange peel essential oil (OPEO) was motivated by concerns about sustainability with conventional solvent methods. The physical and chemical characteristics OPEO were examined to assess its potential sustainable resource. process optimised, ideal conditions determined 317.51 min time at 74.85 °C solvent-to-sample ratio 4. Analysis extracted revealed significant values saponification (121.67 mg KOH/g), acid (4.13 ester (117.54 free fatty (1.56 KOH/g) content, demonstrating composition. Notably, key ingredients such Limonene (43.96%), α-pinene (15.60%), β-myrcene (10.21%), γ-terpinene (5.00%), α-terpineol (4.15%) found in high proportions according composition analysis. Furthermore, exhibited excellent antioxidant properties an IC50 value 7.73 ± 2.00 mg/mL displayed notable antimicrobial activity against various microorganisms, including P. aeruginosa (17.7 0.6 mm), E. coli (11.0 0.0 K. pneumoniae (10.7 S. aureus (10.3 mm). These findings have implications flavor fragrance sector, well food preservation industry.

Language: Английский

Citations

5
Representing the dynamics of natural marmoset vocal behaviors in frontal cortex DOI Creative Commons

Jingwen Li,

Mikio Aoi, Cory T. Miller

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: March 17, 2024

Here we tested the respective contributions of primate premotor and prefrontal cortex to support vocal behavior. We applied a model-based GLM analysis that better accounts for inherent variance in natural, continuous behaviors characterize activity neurons throughout frontal as freely-moving marmosets engaged conversational exchanges. While analyses revealed functional clusters neural related different processes involved behavior, these did not map subfields or cortex, has been observed more conventional task-based paradigms. Our results suggest distributed organization myriad mechanisms underlying natural social interactions implications our concepts role plays governing ethological primates.

Language: Английский

Citations

4
Reduced latency in manual interception with anticipatory smooth eye movements DOI Creative Commons
Takeshi Miyamoto,

Kosuke Numasawa,

Riku Hirano

et al.

iScience, Journal Year: 2025, Volume and Issue: 28(2), P. 111849 - 111849

Published: Jan. 21, 2025

Language: Английский

Citations

0
Representing the dynamics of natural marmoset vocal behaviors in frontal cortex DOI Creative Commons

Jingwen Li,

Mikio Aoi, Cory T. Miller

et al.

Neuron, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

Citations

3
An ethologically motivated neurobiology of primate visually-guided reach-to-grasp behavior DOI Creative Commons
Jude F. Mitchell, Kuan Hong Wang, Aaron P. Batista

et al.

Current Opinion in Neurobiology, Journal Year: 2024, Volume and Issue: 86, P. 102872 - 102872

Published: April 1, 2024

The precision of primate visually guided reaching likely evolved to meet the many challenges faced by living in arboreal environments, yet much what we know about underlying brain organization derives from a set highly constrained experimental paradigms. Here review role vision guide natural reach-to-grasp movements marmoset monkey prey capture illustrate breadth and diversity these behaviors ethological contexts, fast predictive nature [1,2], advantages this particular model investigate neural mechanisms more naturalistic contexts [3]. In addition their amenability freely-moving recording methods for investigating basis dynamic [4,5], marmosets have smooth neocortical surface that facilitates imaging array recordings [6,7] all areas fronto-parietal network [8,9]. Together, organism offers novel opportunities study real-world interplay between dynamics using ethologically motivated neuroscientific designs.

Language: Английский

Citations

2
Active vision in freely moving marmosets using head-mounted eye tracking DOI Creative Commons
Vikram Singh, Jingwen Li, Jude F. Mitchell

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: May 12, 2024

Abstract Our understanding of how vision functions as primates actively navigate the real-world is remarkably sparse. As most data have been limited to chaired and typically head-restrained animals, synergistic interactions different motor actions/plans inherent active sensing – e.g. eyes, head, posture, movement, etc. - on visual perception are largely unknown. To address this considerable gap in knowledge, we developed an innovative wireless head-mounted eye tracking system called CEREBRO for small mammals, such marmoset monkeys. performs C hair-free E ye- Re cording using B ackpack mounted mic RO controllers. Because illumination environment lighting change continuously natural contexts, a segmentation artificial neural network perform robust pupil these conditions. Leveraging investigate vision, demonstrate that although freely-moving marmosets exhibit frequent compensatory movements equivalent other primates, including humans, predictability enhanced when animals relative they head-fixed. Moreover, despite increases eye/head-motion during locomotion, gaze stabilization actually improved over periods monkeys were stationary. Rather than impair dynamics has optimized evolution enable exploration.

Language: Английский

Citations

2
Deciphering social traits and pathophysiological conditions from natural behaviors in common marmosets DOI
Takaaki Kaneko, Jumpei Matsumoto,

Wanyi Lu

et al.

Current Biology, Journal Year: 2024, Volume and Issue: 34(13), P. 2854 - 2867.e5

Published: June 17, 2024

Language: Английский

Citations

1
A dynamic scale-mixture model of motion in natural scenes DOI Open Access
Jared M. Salisbury, Stephanie E. Palmer

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Oct. 23, 2023

Some of the most important tasks visual and motor systems involve estimating motion objects tracking them over time. Such evolved to meet behavioral needs organism in its natural environment, may therefore be adapted statistics it is likely encounter. By movement individual points movies scenes, we begin identify common properties across scenes. As expected, scenes move a persistent fashion, with velocity correlations lasting hundreds milliseconds. More subtly, but crucially, find that observed distributions are heavy-tailed can modeled as Gaussian scale-mixture. Extending this model time domain leads dynamic scale-mixture model, consisting process multiplied by positive scalar quantity own independent dynamics. Dynamic scaling arises naturally consequence changes object distance from observer, approximate effects other parameters governing given scene. This modeling estimation framework has implications for neurobiology sensory systems, which need cope these fluctuations scale order represent efficiently drive fast accurate behavior.

Language: Английский

Citations

2