Results 1 to 10 of about 80,528 (150)

Predictive learning rules generate a cortical-like replay of probabilistic sensory experiences [PDF]

eLife
The brain is thought to construct an optimal internal model representing the probabilistic structure of the environment accurately. Evidence suggests that spontaneous brain activity gives such a model by cycling through activity patterns evoked by ...
Toshitake Asabuki, Tomoki Fukai
doaj   +2 more sources

Embedding stochastic dynamics of the environment in spontaneous activity by prediction-based plasticity [PDF]

eLife
The brain learns an internal model of the environment through sensory experiences, which is essential for high-level cognitive processes. Recent studies show that spontaneous activity reflects such a learned internal model. Although computational studies
Toshitake Asabuki, Claudia Clopath
doaj   +2 more sources

Reentrant melting of scarred odd crystals by self-shear [PDF]

Nature Communications
Spatial confinement can induce geometrical frustration in condensed phases, giving rise to topological defects that confer materials with new and exotic properties.
Uttam Tiwari, Pragya Arora, A. K. Sood, Sriram Ramaswamy, Rituparno Mandal, Rajesh Ganapathy   +5 more
doaj   +2 more sources

Spontaneous and evoked activity patterns diverge over development

eLife, 2021
The immature brain is highly spontaneously active. Over development this activity must be integrated with emerging patterns of stimulus-evoked activity, but little is known about how this occurs.
Lilach Avitan, Zac Pujic, Jan Mölter, Shuyu Zhu, Biao Sun, Geoffrey J Goodhill   +5 more
doaj   +1 more source

Chiral porphyrin assemblies

Aggregate, 2023
Porphyrins are among the most important macrocycles because they perform many essential functions in living systems and serve as building blocks in many functional materials. Incorporating the chirality into porphyrins can aid biomimetic research and the
Li Zhang, Tianyu Wang, Jianzhuang Jiang, Minghua Liu   +3 more
doaj   +1 more source

Polymorphism in tubulin assemblies: A mechanical model

Physical Review Research, 2023
We investigate the mechanical origin of polymorphic structures in two-dimensional tubulin assemblies, of which microtubules are the best known example.
Ireth García-Aguilar, Steven Zwaan, Luca Giomi   +2 more
doaj   +1 more source

Ambient Fluid Rheology Modulates Oscillatory Instabilities in Filament-Motor Systems

Frontiers in Physics, 2022
Semi-flexible filaments interacting with molecular motors and immersed in rheologically complex and viscoelastic media constitute a common motif in biology. Synthetic mimics of filament-motor systems also feature active or field-activated filaments.
Joshua Tamayo, Anupam Mishra, Arvind Gopinath   +2 more
doaj   +1 more source

Interplay between short- and long-term plasticity in cell-assembly formation. [PDF]

PLoS ONE, 2014
Various hippocampal and neocortical synapses of mammalian brain show both short-term plasticity and long-term plasticity, which are considered to underlie learning and memory by the brain. According to Hebb's postulate, synaptic plasticity encodes memory
Naoki Hiratani, Tomoki Fukai
doaj   +1 more source

Self-assembly of Tween 80 micelles as nanocargos for oregano and trans-cinnamaldehyde plant-derived compounds [PDF]

, 2020
The self-assembly of Tween 80 (T80) micelles loaded with plant-based oregano essential oil (OR) and trans-cinnamaldehyde (TCA) was studied. The effect of different factors, including the surfactant to oil ratio, the presence of sodium chloride, thermal ...
Claeys, Myriam, Devlieghere, Frank, Sedaghat Doost, Ali, Stevens, Christian, Van der Meeren, Paul   +4 more
core   +1 more source

Rotor orientation direction controls geometric curvature and chirality for assemblies of motor amphiphiles in water

Aggregate, 2023
Control over geometric curvature and chirality of assemblies in pure aqueous media is key to the design of responsive materials and molecular machines.
Yun‐Han Yang, Yang Qin, Yang Zhang, Ling Zhang   +3 more
doaj   +1 more source