User profiles for Ziad M. Hafed
Ziad HafedWerner Reichardt Centre for Integrative Neuroscience Verified email at cin.uni-tuebingen.de Cited by 4801 |
Neuronal control of fixation and fixational eye movements
Ocular fixation is a dynamic process that is actively controlled by many of the same brain
structures involved in the control of eye movements, including the superior colliculus, …
structures involved in the control of eye movements, including the superior colliculus, …
How is visual salience computed in the brain? Insights from behaviour, neurobiology and modelling
Inherent in visual scene analysis is a bottleneck associated with the need to sequentially
sample locations with foveating eye movements. The concept of a ‘saliency map’ …
sample locations with foveating eye movements. The concept of a ‘saliency map’ …
Mechanisms for generating and compensating for the smallest possible saccades
ZM Hafed - European Journal of Neuroscience, 2011 - Wiley Online Library
Microsaccades are small eye movements that occur during gaze fixation. Although taking
place only when we attempt to stabilize gaze position, microsaccades can be understood by …
place only when we attempt to stabilize gaze position, microsaccades can be understood by …
Face recognition using the discrete cosine transform
An accurate and robust face recognition system was developed and tested. This system
exploits the feature extraction capabilities of the discrete cosine transform (DCT) and invokes …
exploits the feature extraction capabilities of the discrete cosine transform (DCT) and invokes …
[HTML][HTML] Microsaccades as an overt measure of covert attention shifts
Microsaccades, or tiny eye movements that take place during periods of fixation, have long
been thought to be random artifacts of the oculomotor system. Here we demonstrate a …
been thought to be random artifacts of the oculomotor system. Here we demonstrate a …
A neural mechanism for microsaccade generation in the primate superior colliculus
During fixation, the eyes are not still but often exhibit microsaccadic movements. The function
of microsaccades is controversial, largely because the neural mechanisms responsible for …
of microsaccades is controversial, largely because the neural mechanisms responsible for …
Microsaccadic suppression of visual bursts in the primate superior colliculus
ZM Hafed, RJ Krauzlis - Journal of Neuroscience, 2010 - Soc Neuroscience
Saccadic suppression, a behavioral phenomenon in which perceptual thresholds are
elevated before, during, and after saccadic eye movements, is an important mechanism for …
elevated before, during, and after saccadic eye movements, is an important mechanism for …
[PDF][PDF] Alteration of visual perception prior to microsaccades
ZM Hafed - Neuron, 2013 - cell.com
… I am also grateful to M. Hafed and A. Nieder for reading an earlier version of the manuscript.
This work was funded by the Werner Reichardt Centre for Integrative Neuroscience, …
This work was funded by the Werner Reichardt Centre for Integrative Neuroscience, …
Similarity of superior colliculus involvement in microsaccade and saccade generation
ZM Hafed, RJ Krauzlis - Journal of neurophysiology, 2012 - journals.physiology.org
The characteristics of microsaccades, or small fixational saccades, and their influence on
visual function have been studied extensively. However, the detailed mechanisms for …
visual function have been studied extensively. However, the detailed mechanisms for …
Modulation of microsaccades in monkey during a covert visual attention task
ZM Hafed, LP Lovejoy, RJ Krauzlis - Journal of Neuroscience, 2011 - Soc Neuroscience
The use of awake, fixating monkeys in neuroscience has allowed significant advances in
understanding numerous brain functions. However, fixation is an active process, with the …
understanding numerous brain functions. However, fixation is an active process, with the …