Selective Attention Desynchronizes Automatic Movements

Attention to Automatic Movements in Parkinson's Disease: Modified Automatic Mode in the Striatum.

We investigated neural correlates when attending to a movement that could be made automatically in healthy subjects and Parkinson's disease (PD) patients. Subjects practiced a visuomotor association task until they could perform it automatically, and then directed their attention back to the automated task. Functional MRI was obtained during the early-learning, automatic stage, and when re-atte...

Abrupt visual onsets and selective attention: voluntary versus automatic allocation.

The hypothesis that abrupt visual onsets capture attention automatically, as suggested by Yantis and Jonides (1984) was tested in four experiments. A centrally located cue directed attention to one of several stimulus positions in preparation for the identification of a target letter embedded in an array of distractor letters. In all experiments, one stimulus (either the target or one of the di...

Selective attention.

Selective Attention as Sequential Behavior: Modeling Eye Movements with an Augmented Hidden Markov Model

Selective attention, or the intelligent application of limited visual resources, continues to be an important theme in computer vision. We assume a spatially variant sensor with a fovea and periphery, and study foveal sequencing, or the problem of where next to con­ centrate high-resolution vision. In most treatments of this subject, the sequence of eye movements emerges as a result of sequenti...

Dissociation of covert and overt spatial attention during prehension movements: selective interference effects.

In four experiments, the influence of distractor objects on the temporal evolution of the reach-to-grasp movement toward a target object (an apple) was examined. In the first experiment, the distractor was another apple, which moved laterally behind the target and occasionally changed direction toward the target, thus becoming the to-be-grasped object. In the second and third experiments, the d...