Mental Imagery of Faces and Places Activates Corresponding Stiimulus-Specific Brain Regions
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Orienting Attention to Locations in Perceptual Versus Mental Representations
Journal of Cognitive Neuroscience
2006 Special Issue: Attention as a controller
Neural Networks
Evidence for false memory before deletion in visual short-term memory
ICONIP'10 Proceedings of the 17th international conference on Neural information processing: theory and algorithms - Volume Part I
Attention modulates maintenance of representations in visual short-term memory
Journal of Cognitive Neuroscience
Neural evidence for a distinction between short-term memory and the focus of attention
Journal of Cognitive Neuroscience
Modelling working memory through attentional mechanisms
ICANN'06 Proceedings of the 16th international conference on Artificial Neural Networks - Volume Part I
Neural evidence for a distinction between short-term memory and the focus of attention
Journal of Cognitive Neuroscience
Recoding between two types of stm representation revealed by the dynamics of memory search
Journal of Cognitive Neuroscience
SC'04 Proceedings of the 4th international conference on Spatial Cognition: reasoning, Action, Interaction
Nonspatial cueing of tactile stm causes shift of spatial attention
Journal of Cognitive Neuroscience
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Three experiments investigated whether it is possible to orient selective spatial attention to internal representations held in working memory in a similar fashion to orienting to perceptual stimuli. In the first experiment, subjects were either cued to orient to a spatial location before a stimulus array was presented (pre-cue), cued to orient to a spatial location in working memory after the array was presented (retro-cue), or given no cueing information (neutral cue). The stimulus array consisted of four differently colored crosses, one in each quadrant. At the end of a trial, a colored cross (probe) was presented centrally, and subjects responded according to whether it had occurred in the array. There were equivalent patterns of behavioral costs and benefits of cueing for both pre-cues and retro-cues. A follow-up experiment used a peripheral probe stimulus requiring a decision about whether its color matched that of the item presented at the same location in the array. Replication of the behavioral costs and benefits of pre-cues and retro-cues in this experiment ruled out changes in response criteria as the only explanation for the effects. The third experiment used event-related potentials (ERPs) to compare the neural processes involved in orienting attention to a spatial location in an external versus an internal spatial representation. In this task, subjects responded according to whether a central probe stimulus occurred at the cued location in the array. There were both similarities and differences between ERPs to spatial cues toward a perception versus an internal spatial representation. Lateralized early posterior and later frontal negativities were observed for both pre- and retro-cues. Retro-cues also showed additional neural processes to be involved in orienting to an internal representation, including early effects over frontal electrodes.