scholarly journals Comparing Pupil Light Response Modulation between Saccade Planning and Working Memory

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Chin-An Wang ◽  
Jeff Huang ◽  
Rachel Yep ◽  
Douglas P. Munoz
Keyword(s):  
Working Memory ◽  
Light Response ◽  
Response Modulation ◽  
Pupil Light Response

The pupillary light response reflects encoding, but not maintenance, in visual working memory.

2016 ◽  
Vol 42 (11) ◽  
pp. 1716-1723 ◽  
Author(s):  
Tessel Blom ◽  
Sebastiaan Mathôt ◽  
Christian N. L. Olivers ◽  
Stefan Van der Stigchel
Keyword(s):  
Working Memory ◽  
Visual Working Memory ◽  
Light Response ◽  
Pupillary Light

scholarly journals Deep learning-based pupil model predicts time and spectral dependent light responses

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Babak Zandi ◽  
Tran Quoc Khanh
Keyword(s):  
Deep Learning ◽  
Time Course ◽  
Light Response ◽  
Absolute Error ◽  
Light Responses ◽  
Temporal Prediction ◽  
Feed Forward Neural Networks ◽  
Self Learning ◽  
Pupil Light Response ◽  
Planckian Locus

AbstractAlthough research has made significant findings in the neurophysiological process behind the pupillary light reflex, the temporal prediction of the pupil diameter triggered by polychromatic or chromatic stimulus spectra is still not possible. State of the art pupil models rested in estimating a static diameter at the equilibrium-state for spectra along the Planckian locus. Neither the temporal receptor-weighting nor the spectral-dependent adaptation behaviour of the afferent pupil control path is mapped in such functions. Here we propose a deep learning-driven concept of a pupil model, which reconstructs the pupil’s time course either from photometric and colourimetric or receptor-based stimulus quantities. By merging feed-forward neural networks with a biomechanical differential equation, we predict the temporal pupil light response with a mean absolute error below 0.1 mm from polychromatic (2007 $$\pm$$ ± 1 K, 4983 $$\pm$$ ± 3 K, 10,138 $$\pm$$ ± 22 K) and chromatic spectra (450 nm, 530 nm, 610 nm, 660 nm) at 100.01 ± 0.25 cd/m2. This non-parametric and self-learning concept could open the door to a generalized description of the pupil behaviour.

Fourier Descriptors for Characterizing Waveforms of the Pupil Light Response to Chromatic Stimuli

2011 ◽  
Author(s):  
Wioletta Nowak ◽  
Minoru Nakayama ◽  
Hitoshi Ishikawa ◽  
Ken Asakawa
Keyword(s):  
Light Response ◽  
Fourier Descriptors ◽  
Pupil Light Response

scholarly journals Melanopsin and Cone Photoreceptor Inputs to the Afferent Pupil Light Response

2019 ◽  
Vol 10 ◽  
Author(s):  
Andrew J. Zele ◽  
Prakash Adhikari ◽  
Dingcai Cao ◽  
Beatrix Feigl
Keyword(s):  
Light Response ◽  
Cone Photoreceptor ◽  
Pupil Light Response

FOURIER DESCRIPTORS FOR CHARACTERIZING WAVEFORMS OF THE PUPIL LIGHT RESPONSE TO CHROMATIC STIMULI

2010 ◽  
Author(s):  
Minoru Nakayama ◽  
Hitoshi Ishikawa ◽  
Ken Asakawa ◽  
Wioletta Nowak
Keyword(s):  
Light Response ◽  
Fourier Descriptors ◽  
Pupil Light Response

scholarly journals Luminance and chromatic signals interact differently with melanopsin activation to control the pupil light response

2016 ◽  
Vol 16 (11) ◽  
pp. 29 ◽  
Author(s):  
Pablo A. Barrionuevo ◽  
Dingcai Cao
Keyword(s):  
Light Response ◽  
Pupil Light Response

Transition of target-location signaling in activity of macaque lateral intraparietal neurons during delayed-response visual search

2014 ◽  
Vol 112 (6) ◽  
pp. 1516-1527 ◽  
Author(s):  
Satoshi Nishida ◽  
Tomohiro Tanaka ◽  
Tadashi Ogawa
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Cognitive Processes ◽  
Visual Discrimination ◽  
Target Location ◽  
Real Life ◽  
Neural Representation ◽  
Delayed Response ◽  
Response Modulation ◽  
Stimulus Offset

Neurons in the lateral intraparietal area (LIP) are involved in signaling the location of behaviorally relevant objects during visual discrimination and working memory maintenance. Although previous studies have examined these cognitive processes separately, they often appear as inseparable sequential processes in real-life situations. Little is known about how the neural representation of the target location is altered when both cognitive processes are continuously required for executing a task. We investigated this issue by recording single-unit activity from LIP of monkeys performing a delayed-response visual search task in which they were required to discriminate the target from distractors in the stimulus period, remember the location at which the extinguished target had been presented in the delay period, and make a saccade to that location in the response period. Target-location signaling was assessed using response modulations contingent on whether the target location was inside or opposite the receptive field. Although the population-averaged response modulation was consistent and changed only slightly during a trial, the across-neuron pattern of response modulations showed a marked and abrupt change around 170 ms after stimulus offset due to concurrent changes in the response modulations of a subset of LIP neurons, which manifested heterogeneous patterns of activity changes during the task. Our findings suggest that target-location signaling by the across-neuron pattern of LIP activity discretely changes after the stimulus disappearance under conditions that continuously require visual discrimination and working memory to perform a single behavioral task.

scholarly journals Focus of spatial attention during spatial working memory maintenance: Evidence from pupillary light response

2017 ◽  
Vol 25 (1-3) ◽  
pp. 10-20 ◽  
Author(s):  
J. H. Fabius ◽  
S. Mathôt ◽  
M. J. Schut ◽  
T. C. W. Nijboer ◽  
S. Van der Stigchel
Keyword(s):  
Working Memory ◽  
Spatial Attention ◽  
Spatial Working Memory ◽  
Light Response ◽  
Pupillary Light

scholarly journals The pupillary light response reflects encoding, but not maintenance, in visual working memory

2016 ◽  
Vol 16 (12) ◽  
pp. 363
Author(s):  
Stefan Van der Stigchel ◽  
Tessel Blom ◽  
Christiaan Olivers ◽  
Sebastiaan Mathot
Keyword(s):  
Working Memory ◽  
Visual Working Memory ◽  
Light Response ◽  
Pupillary Light
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