Results 31 to 40 of about 40,362 (222)

Distinctive visual tasks for characterizing mild cognitive impairment and dementia using oculomotor behavior

open access: yesFrontiers in Aging Neuroscience, 2023
IntroductionOne’s eye movement (in response to visual tasks) provides a unique window into the cognitive processes and higher-order cognitive functions that become adversely affected in cases with cognitive decline, such as those mild cognitive ...
Dharma Rane   +5 more
doaj   +1 more source

Geometry of saccades and saccadic cycles

open access: yes, 2023
The paper is devoted to the development of the differential geometry of saccades and saccadic cycles. We recall an interpretation of Donder's and Listing's law in terms of the Hopf fibration of the $3$-sphere over the $2$-sphere. In particular, the configuration space of the eye ball (when the head is fixed) is the 2-dimensional hemisphere $S^+_L ...
Alekseevsky, D. V., Shirokov, I. M.
openaire   +3 more sources

GIVE me your attention: Differentiating goal identification and goal execution components of the anti-saccade effect.

open access: yesPLoS ONE, 2019
The anti-saccade task is a commonly used method of assessing individual differences in cognitive control. It has been shown that a number of clinical disorders are characterised by increased anti-saccade cost.
Owen Myles   +3 more
doaj   +1 more source

Oculomotor adaptation elicited by intra-saccadic visual stimulation: time-course of efficient visual target perturbation.

open access: yesFrontiers in Human Neuroscience, 2016
Perception of our visual environment strongly depends on saccadic eye movements, which in turn are calibrated by saccadic adaptation mechanisms elicited by systematic movement errors. Current models of saccadic adaptation assume that visual error signals
Muriel ePanouilleres   +6 more
doaj   +1 more source

Saccadic Eye Movements are Related to Turning Performance in Parkinson Disease

open access: yesJournal of Parkinson’s Disease, 2011
Background. Persons with Parkinson disease (PD) experience difficulty turning, leading to freezing of gait and falls. We hypothesized that saccade dysfunction may relate to turning impairments, as turns are normally initiated with a saccade.
Corey A. Lohnes, Gammon M. Earhart
doaj   +1 more source

Voluntary saccade inhibition deficits correlate with extended white-matter cortico-basal atrophy in Huntington's disease

open access: yesNeuroImage: Clinical, 2017
The ability to inhibit automatic versus voluntary saccade commands in demanding situations can be impaired in neurodegenerative diseases such as Huntington's disease (HD).
Israel Vaca-Palomares   +5 more
doaj   +1 more source

Cortical Activation during Landmark-Centered vs. Gaze-Centered Memory of Saccade Targets in the Human: An FMRI Study

open access: yesFrontiers in Systems Neuroscience, 2017
A remembered saccade target could be encoded in egocentric coordinates such as gaze-centered, or relative to some external allocentric landmark that is independent of the target or gaze (landmark-centered).
Ying Chen   +6 more
doaj   +1 more source

Looking for discriminating is different from looking for looking's sake. [PDF]

open access: yesPLoS ONE, 2012
Recent studies provide evidence for task-specific influences on saccadic eye movements. For instance, saccades exhibit higher peak velocity when the task requires coordinating eye and hand movements.
Hans-Joachim Bieg   +3 more
doaj   +1 more source

ALS With and Without Upper Motor Neuron Signs: A Comparative Study Supporting the Gold Coast Criteria

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The Gold Coast criteria permit diagnosis of amyotrophic lateral sclerosis (ALS) even without upper motor neuron (UMN) signs. However, whether ALS patients with UMN signs (ALSwUMN) and those without (ALSwoUMN) share similar characteristics and prognoses remains unclear.
Hee‐Jae Jung   +7 more
wiley   +1 more source

Adult‐Onset Subacute Sclerosing Panencephalitis Presenting With Subacute Cognitive Deficits

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT We describe the case of a 41‐year‐old man diagnosed with adult‐onset subacute sclerosing panencephalitis (SSPE). The patient presented with subacute progressive cognitive deficits and a neuropsychological profile indicating predominant frontoparietal dysfunction. MRI showed only mild parietal‐predominant cerebral atrophy.
Dennis Yeow   +4 more
wiley   +1 more source

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