26 papers · ranked by Valyu relevance
Abdelmalik Moujahid, Fernando Vadillo
Mathematical modeling is an important tool to study the role of delay in neural systems and to evaluate its effects on the signaling activity of coupled neurons. Models for delayed neurons are often used to represent the dynamics of real neurons, but rarely to assess the energy required to maintain these dynamics. In…
Bruno R. R. Boaretto, Kalel L. Rossi, Lyle E. Muller, Elbert E. Macau + 1 more
Neuronal communication is inherently time-delayed, due to the finite speed of signal propagation. Although often considered challenging or disruptive, such time delays can also endow neural circuits with useful capabilities. Here, we show that delays in excitatory connections between excitable neurons coordinate their…
Zahra G. Esfahani, Leonardo L. Gollo, Alireza Valizadeh
Time delay is a general feature of all interactions. Although the effects of delayed interaction are often neglected when the intrinsic dynamics is much slower than the coupling delay, they can be crucial otherwise. We show that delayed coupled neuronal networks support transitions between synchronous and asynchronous…
Mattia Coccolo, Miguel A. F. Sanjuán
We study two coupled systems, one playing the role of the driver system and the other one of the driven system. The driver system is a time-delayed oscillator, and the driven or response system has a negligible delay. Since the driver system plays the role of the only external forcing of the driven system, we…
Valentin Bégel, Alexander P. Demos, Michelle Wang, Caroline Palmer
Important individual differences are observed in people’s abilities to synchronize their body movements with regular auditory rhythms. We investigate whether synchronizing with a regular auditory cue is affected by each person’s spontaneous production rate (SPR) and by hearing a partner’s synchronization in a social…
Joon-Young Moon, Kathrin Müsch, Charles E. Schroeder, Taufik A. Valiante + 1 more
The flow of information between cortical regions depends on the excitability at each site, which is reflected in fluctuating field potentials. It remains uncertain how global changes in field potentials affect the latency and strength of cortico-cortical couplings. Therefore, we measured changes in oscillations and…
Hwayeon Ryu, Sue Ann Campbell
We study a model for a network of synaptically coupled, excitable neurons to identify the role of coupling delays in generating different network behaviors. The network consists of two distinct populations, each of which contains one excitatory-inhibitory neuron pair. The two pairs are coupled via delayed synaptic…
Christian Bick, Bob Rink, Babette de Wolff
reduction unravels delay-induced synchronization in oscillator networks Authors: ['Christian Bick' 'Bob Rink' 'Babette de Wolff'] Coupled oscillators with time-delayed network interactions are critical to understand synchronization phenomena in many physical systems. Phase reductions to finite-dimensional phase…
Ewandson L. Lameu, Elbert E. N. Macau, Fernando S. Borges, Kelly C. Iarosz + 5 more
'Kelly C. Iarosz' 'Iberê L. Caldas' 'Rafael R. Borges' 'Paulo R. Protachevicz' 'Ricardo L. Viana' 'Antônio M. Batista'] Brain plasticity refers to brain's ability to change neuronal connections, as a result of environmental stimuli, new experiences, or damage. In this work, we study the effects of the synaptic delay on…
Aradhana Singh, Sarika Jalan, Jürgen Kurths
We study the role of delay in phase synchronization and phenomena responsible for cluster formation in delayed coupled maps on various networks. Using numerical simulations, we demonstrate that the presence of delay may change the mechanism of unit to unit interaction. At weak coupling values, same parity delays are…
Polina Plitchenko, Valentin Bégel, Caroline Palmer
Successful music-making requires precise sensorimotor synchronization, both in individual (solo) and joint (ensemble) social settings. We investigated how individual practice synchronizing with a temporally regular melody (Solo conditions) influences subsequent synchronization between two partners (Joint conditions).…
Malik Muhammad Ibrahim, Shazia Iram, Muhammad Ahmad Kamran, Malik Muhammad Naeem Mannan + 3 more
'Malik Muhammad Naeem Mannan' 'Muhammad Umair Ali' 'Il Hyo Jung' 'Sangil Kim'] This paper presents a methodology for synchronizing noisy and nonnoisy multiple coupled neurobiological FitzHugh-Nagumo (FHN) drive and slave neural networks with and without delayed coupling, under external electrical stimulation (EES)…
Jingxian Gu, Dobromir Dotov
When walking, we generate rich acoustic information through our footsteps. This sound stream contains information about footfall timing, dragging, loading rate, etc. The role of this endogenous auditory feedback in gait control remains underexplored. Building on work in delayed auditory feedback (DAF) for speech and on…
Clara Cámara, Cristina de la Malla, Josep Marco-Pallarés, Joan López-Moliner
Every time we use our smartphone, tablet, or other electronic devices we are exposed to temporal delays between our actions and the sensory feedback. We can compensate for such delays by adjusting our motor commands and doing so likely requires establishing new temporal mappings between motor areas and sensory…
Valentin Bégel, Alexander P. Demos, Caroline Palmer
Humans’ complex behavior, such as speech, music, or dance, requires us to coordinate our actions with external sounds as well as with social partners. The presence of a partner can influence individuals’ synchronization, and, in turn, social connection with the partner may depend on the degree of synchronization. We…
Oleksandr V. Popovych, Borys Lysyansky, Michael Rosenblum, Arkady Pikovsky + 2 more
'Arkady Pikovsky' 'Peter A. Tass' 'Miguel A. F. Sanjuán'] High-frequency (HF) deep brain stimulation (DBS) is the gold standard for the treatment of medically refractory movement disorders like Parkinson’s disease, essential tremor, and dystonia, with a significant potential for application to other neurological…
Alireza Nadafian, Mohammad Ganjtabesh
The plasticity of the conduction delay between neurons plays a fundamental role in learning. However, the exact underlying mechanisms in the brain for this modulation is still an open problem. Understanding the precise adjustment of synaptic delays could help us in developing effective brain-inspired computational…
Authors not listed
Thermally activated delayed fluorescence (TADF) is a desirable emission mechanism that can translate into highly efficient organic light-emitting diodes (OLEDs). Conventionally, the TADF kinetics have been extracted by analysing the transient photoluminescence (PL) of the emitters in combination with measurements of…
Authors not listed
Molecular geometry is a powerful lever for steering excited-state dynamics in thermally activated delayed fluorescence (TADF) systems. We present a modular phthalimide-based emitter platform that systematically decouples donor planarity and donor–acceptor (D–A) connectivity to sculpt distinct excited-state topologies.…
Sirong Lin, Zheng Pei, Bin Zhang, Huili Ma + 1 more
Assessing and improving the performance of organic light-emitting diode (OLED) materials require quantitative prediction of rate coefficients for the intersystem crossing (ISC) and reverse ISC (RISC) processes, which are determined not only by the singlet-triplet energy gap and the direct spin-orbit coupling (SOC) at a…
Satya Rungta, Aditya Murthy
Understanding how the brain transforms motor plans into the appropriate pattern of muscle activity is a central question in motor control. Whereas some neurophysiological studies in non-human primates have shown the presence of early recruitment of motor units, other studies have reported recruitment of motor units to…
Guy Avraham, Raz Leib, Assaf Pressman, Lucia S. Simo + 4 more
'Lior Shmuelof' 'Ferdinando A. Mussa-Ivaldi' 'Ilana Nisky'] Title: Abstract To accurately estimate the state of the body, the nervous system needs to account for delays between signals from different sensory modalities. To investigate how such delays may be represented in the sensorimotor system, we asked human…
Marijn van Vliet, Nikolay V. Manyakov, Gert Storms, Wim Fias + 3 more
'Jan R. Wiersema' 'Marc M. Van Hulle' 'Antoni Rodriguez-Fornells'] This study examines the influence of a button response task on the event-related potential (ERP) in a semantic priming experiment. Of particular interest is the N400 component. In many semantic priming studies, subjects are asked to respond to a…
Aliye Hazal Koyuncu, Jacopo Movilli, Sevil Sahin, Dmitrii V. Kriukov + 2 more
This work describes a competing activation network, which is regulated by chemical feedback at the liquid-surface interface. Feedback loops dynamically tune the concentration of chemical components in living systems, thereby controlling regulatory processes in neural, genetic, and metabolic networks. Advances in…
Authors not listed
This study investigates how the emission mechanism (fluorescence, phosphorescence, or thermally activated delayed fluorescence, TADF) of a luminescence-quenching chemical sensor influences the sensitivity of explosives detection. Steady-state and time-resolved photoluminescence measurements were used to evaluate the…
Sen Wu, Ya-nan Hu, Jingxiang Wang, Dianming Sun + 3 more
Multiresonant thermally activated delayed fluorescence (MR-TADF) compounds are attractive for use in organic light-emitting diodes as they show narrowband emission, are bright, and can harvest both singlet and triplet excitons for the emission of light. Reflected in the paucity of examples of orange-to-red emitters…