Zobrazeno 1 - 10
of 153
pro vyhledávání: '"John Van Opstal, A."'
Publikováno v:
Frontiers in Robotics and AI, Vol 11 (2024)
We recently developed a biomimetic robotic eye with six independent tendons, each controlled by their own rotatory motor, and with insertions on the eye ball that faithfully mimic the biomechanics of the human eye. We constructed an accurate physical
Externí odkaz:
https://doaj.org/article/b983f41a3d4b473c80171d93ed9fa652
Autor:
A. John van Opstal
Publikováno v:
Communications Biology, Vol 6, Iss 1, Pp 1-17 (2023)
Abstract The midbrain superior colliculus is a crucial sensorimotor stage for programming and generating saccadic eye-head gaze shifts. Although it is well established that superior colliculus cells encode a neural command that specifies the amplitud
Externí odkaz:
https://doaj.org/article/f1b626edf6c9407d9e8388d00bcae309
Publikováno v:
Frontiers in Neuroscience, Vol 17 (2023)
A cochlear implant (CI) is a neurotechnological device that restores total sensorineural hearing loss. It contains a sophisticated speech processor that analyzes and transforms the acoustic input. It distributes its time-enveloped spectral content to
Externí odkaz:
https://doaj.org/article/4481932664fd4d7a86c905c9bd9b119e
Autor:
Arezoo Alizadeh, A. John Van Opstal
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-15 (2022)
Abstract Previous studies have indicated that the location of a large neural population in the Superior Colliculus (SC) motor map specifies the amplitude and direction of the saccadic eye-movement vector, while the saccade trajectory and velocity pro
Externí odkaz:
https://doaj.org/article/5ee1747991f7451ea53ad057f5540500
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-14 (2022)
Abstract Several studies have proposed that an optimal speed-accuracy tradeoff underlies the stereotyped relationship between amplitude, duration and peak velocity of saccades (main sequence). To test this theory, we asked 8 participants to make sacc
Externí odkaz:
https://doaj.org/article/ee0423739f4847358fc6511182f361c9
Dynamic control of eye-head gaze shifts by a spiking neural network model of the superior colliculus
Autor:
Arezoo Alizadeh, A. John Van Opstal
Publikováno v:
Frontiers in Computational Neuroscience, Vol 16 (2022)
IntroductionTo reorient gaze (the eye’s direction in space) towards a target is an overdetermined problem, as infinitely many combinations of eye- and head movements can specify the same gaze-displacement vector. Yet, behavioral measurements show t
Externí odkaz:
https://doaj.org/article/1391b1aa4b7f4651b12b99aa816d9815
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-21 (2021)
Abstract The latency of the auditory steady-state response (ASSR) may provide valuable information regarding the integrity of the auditory system, as it could potentially reveal the presence of multiple intracerebral sources. To estimate multiple lat
Externí odkaz:
https://doaj.org/article/7353b2ae79e549a99f266fb32a01315f
Publikováno v:
Frontiers in Neuroscience, Vol 15 (2021)
The cochlear implant (CI) allows profoundly deaf individuals to partially recover hearing. Still, due to the coarse acoustic information provided by the implant, CI users have considerable difficulties in recognizing speech, especially in noisy envir
Externí odkaz:
https://doaj.org/article/0ff4e561df6041e7aa8f6f4e887043aa
Publikováno v:
PLoS Computational Biology, Vol 17, Iss 5, p e1008975 (2021)
An interesting problem for the human saccadic eye-movement system is how to deal with the degrees-of-freedom problem: the six extra-ocular muscles provide three rotational degrees of freedom, while only two are needed to point gaze at any direction.
Externí odkaz:
https://doaj.org/article/b4c1e9e6c02f4bd8ae926537a2eb279a
Autor:
Sebastián A. Ausili, Martijn J. H. Agterberg, Andreas Engel, Christiane Voelter, Jan Peter Thomas, Stefan Brill, Ad F. M. Snik, Stefan Dazert, A. John Van Opstal, Emmanuel A. M. Mylanus
Publikováno v:
Frontiers in Neurology, Vol 11 (2020)
Several studies have demonstrated the advantages of the bilateral vs. unilateral cochlear implantation in listeners with bilateral severe to profound hearing loss. However, it remains unclear to what extent bilaterally implanted listeners have access
Externí odkaz:
https://doaj.org/article/d689687b40644f2bb06b58b5c9f0d591