Results 101 to 110 of about 17,532 (204)

Modulation of physiological reflexes by pain: role of the locus coeruleus

open access: yesFrontiers in Integrative Neuroscience, 2012
The locus coeruleus is activated by noxious stimuli, and this activation leads to inhibition of perceived pain. As two physiological reflexes, the acoustic startle reflex and the pupillary light reflex, are sensitive to noxious stimuli, this sensitivity,
Elemer eSzabadi
doaj   +1 more source

Circadian Control of the Pupillary Light Responses in an Avian Model of Blindness, the GUCY1* Chickens [PDF]

open access: yes, 2015
PURPOSE. The vertebrate inner retina has a subset of intrinsically photosensitive retinal ganglion cells (ipRGCs) that express the nonvisual photopigment melanopsin.
Della Costa, Natalia Soledad   +4 more
core   +1 more source

Modeling Human Pupil Dilation to Decouple the Pupillary Light Reflex

open access: yesOpen Physics, 2019
The aim of this paper is to present methods to calculate pupil size based on various parameters, such as: luminance, age, corneal flux density or monocular/binocular effect.
Napieralski Piotr, Rynkiewicz Filip
doaj   +1 more source

The pupillary light reflex in normal subjects. [PDF]

open access: yesBritish Journal of Ophthalmology, 1981
In 19 normal subjects the pupillary reflex to light was studied over a range of stimulus intensities by infrared electronic pupillography and analysed by a computer technique. Increasing stimulus intensity was associated with an increase in direct light reflex amplitude and maximum rate of constriction and redilatation.
openaire   +2 more sources

Postmortem iris recognition and its application in human identification [PDF]

open access: yes, 2015
Iris recognition is a validated and non-invasive human identification technology currently implemented for the purposes of surveillance and security (i.e. border control, schools, military).
Sansola, Alora
core   +1 more source

Orientation in the diagnosis of intraocular neoplasia, through intraocular fine needle aspiration (IFNA) [PDF]

open access: yes, 2018
IFNA is a safe diagnostic technique that allows diagnostic of neoplastic and inflammatory processes of the eye1. In cats melanoma is common in the eye, skin and oral cavity2. In the eyep, local infiltration to systemic metastases may occur2.
Alexandre, N.   +3 more
core  

Pupil size modulation drives retinal activity in mice and shapes human perception

open access: yesNature Communications
Retinal adaptation is assisted by the pupil, with pupil contraction and dilation thought to prevent global light changes from triggering neuronal activity in the retina.
Tjasa Lapanja   +16 more
doaj   +1 more source

Pupillary Light Reflex and Multimodal Imaging in Patients With Central Serous Chorioretinopathy. [PDF]

open access: yesInvest Ophthalmol Vis Sci, 2023
Zhou X   +7 more
europepmc   +1 more source

Selective innervation of retinorecipient brainstem nuclei by retinal ganglion cell axons regenerating through peripheral nerve grafts [PDF]

open access: yes, 2000
The pattern of axonal regeneration, specificity of reinnervation, and terminal arborization in the brainstem by axotomized retinal ganglion cell axons was studied in rats with peripheral nerve grafts linking the retina with ipsilateral regions of the ...

core  

Visual and control aspects of saccadic eye movements [PDF]

open access: yes
Physiological, behavioral, and control investigation of rapid saccadic jump eye movement in ...
Stark, L., Young, L. R., Zuber, B. L.
core   +1 more source

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