Sentences with phrase «saccade task»

All of these cells were studied with a standard saccade task in which the animal made saccades from an initial fixation LED to a peripheral target LED which was presented for 500 ms.. The movement field of each neuron was determined by eliciting saccades to targets inside and neighboring the response field («movement field scan»).

After this memory - guided task, we recorded from the same neurons while the animals performed the self - timed rhythmic - saccade task (Figure 1A, B).

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.

According to neurologists R. John Leigh and David Zee, authors of the comprehensive The Neurology of Eye Movements (Oxford University Press, 1999), schizophrenics show consistent abnormalities in the voluntary control of saccades, particularly in tasks requiring imagination, memory or prediction.

A good fit between the predicted rates (green traces) and the observed firing rates (red and blue traces) would indicate that activity locked to a particular saccade can largely explain the firing rate changes seen in the cyclical task.

The difference between this prediction and the observed firing rate for activity aligned to central saccades indicates how well activity associated with peripheral saccades can completely explain task - related modulations in activity.