Sentences with phrase «as saccades»

The rapid eye movements we make when we shift our attention from one object to another, known as saccades, are essential to navigating, understanding, and interacting with the world around us.

These rapid eye movements, known as saccades, were timed in all of the participants to see which of them were capable of making high numbers of express saccades — particularly fast responses which begin a tenth of a second after a target appears.

Moving your eyes smoothly enough to trace out words is hard because your eyes constantly make jerky motions known as saccades, unless you are tracking a moving object.

Not exact matches

By recording neuronal activity in monkeys as they performed tasks that caused saccades, Dr. Christopher Pack has shown that there are waves of activity that cross specific vision processing areas of the brain in defined patterns, and that these patterns are reorganized by saccadic eye movements.

Subjects were tested for their rapid eye movement that allows focus to shift on multiple objects in the field of vision (aka saccade) and ability to follow objects moving across the visual field, known as smooth - pursuit.

«If these deficits do turn out to be a consistent finding in a sub-group of children with ASD, this raises the possibility that saccade adaptation measures may have utility as a method that will allow early detection of this disorder.»

But there has been extensive work showing that people with schizophrenia do indeed have abnormal saccades, the fast eye movements that direct our gaze from object to object as we explore a visual scene.

Yet correlations were not significant for either saccade alignment as animals fixated on the central target in the high modulation cells.

The 800 ms intervals were investigated as that is the minimum time for correctly made saccades as defined by the error window (1,000 ms ± 200 ms).

For each saccade, the burst magnitude was quantified from the raw data by counting all spikes in the time window between the two tick marks (identifying saccade onset an offset with a 20 ms lead time), and the resulting spike counts are displayed in the adjacent panels as running averages.

Nevertheless, the burst properties reported in this study strongly support the idea that the deeper layers of the SC act as an optimal controller: the systematic organization of peak firing rates and burst durations as function of saccade amplitude along the motor map, the synchronous change in firing rate of recruited cells in the population, and the shaping of the temporal burst profile of a given cell with the currently planned saccade, all contribute to the generation of straight eye - movement trajectories with optimal kinematics.

Three different activity measures were used to quantify the magnitude of the saccade - related bursts of SC neurons for movements towards the center of their movement field as a function of their rostral - to - caudal location in the SC motor map: A) number of spikes in the burst, B) mean firing rate and C) peak spike density.

Saccades are the fastest movements of the body, and theoretical studies suggest that their trajectories are optimized to bring the fovea as fast and accurately as possible on target.

Note that for a given saccade amplitude the burst profiles along the rostral - to - caudal extent of the SC appear to have very similar shapes, which change systematically as function of saccade amplitude (and duration).

To test these theoretical predictions, Fig. 4 quantifies several burst properties of saccade - related SC cells for saccades towards the center of their movement field as a function their anatomical rostral - to - caudal location in the motor map: number of spikes in the burst (Fig. 4A), mean firing rate (Fig. 4B), and peak firing rate (Fig. 4C).

Taken together, our findings provide strong support for the argument that the nonlinear saccade kinematics are not due to a passive saturation of brainstem burst neurons, e.g., as a result of neural fatigue, but reflect a deliberate design property within the saccadic system to produce the main - sequence characteristics.

Mean firing rates, Fm, were defined as the number of spikes in the burst divided by saccade duration.

Together the combination of tiny tracheas, laryngeal saccades and stenotic nares is known as Brachycephalic Airway Syndrome.