Journal of Cognitive Neuroscience articles from November 1999

Journal of Cognitive Neuroscience archives from November 1999

"What"--Then--"Where" in Visual Working Memory: An Event-Related fMRI Study.(Review)
November 1, 1999... Abstract * Behavioral studies indicate that spatial and object working memory are computed by dissociable subsystems. We investigated the neural bases of this dissociation with a whole-brain fMRI design and analysis technique that...

Frontal Brain Activity during Episodic and Semantic Retrieval: Insights from Event-Related Potentials.(Review)
November 1, 1999... Abstract * Previous neuropsychological and neuroimaging results have implicated the prefrontal cortex in memory retrieval, although its precise role is unclear. In the present study, we examined patterns of brain electrical activity during...

Preferences for Visual Stimuli Following Amygdala Damage.
November 1, 1999... Abstract * Bilateral damage to the human amygdala impairs retrieval of emotional and social information from faces. An important unanswered question concerns the specificity of the impairment for faces. To address this question, we...

Differential Contributions of the Left and Right Inferior Parietal Lobules to Number Processing.
November 1, 1999... Abstract We measured cerebral activation with functional magnetic resonance imaging at 3 Tesla while eight healthy volunteers performed various number processing tasks known to be dissociable in brain-lesioned patients: naming, comparing,...

Set- and Code-Specific Activation in the Frontal Cortex: An fMRI Study of Encoding and Retrieval of Faces and Words.
November 1, 1999... Abstract The frontal cortex has been described as playing both "set-specific" and "code-specific" roles in human memory processing. Set specificity refers to the finding of goal-oriented differences in activation patterns (e.g., encoding...

Target Selection for Pursuit and Saccadic Eye Movements in Humans.
November 1, 1999... Abstract * Eye movements were recorded from three subjects as they initiated tracking of a small circle ("target") moving leftward or rightward, above or below the horizontal meridian, either alone or in the presence of a small square...

Words without Mind.
November 1, 1999... Abstract A woman (LR), unconscious for 20 years, spontaneously produces infrequent, isolated words unrelated to any environmental context. Fluorodeoxy-glucose-positron emission to-mography (FDG-PET) imaging coregistered with magnetic...

Semantic Integration in Sentences and Discourse: Evidence from the N400.
November 1, 1999... Abstract * In two ERP experiments we investigated how and when the language comprehension system relates an incoming word to semantic representations of an unfolding local sentence and a wider discourse. In Experiment 1, subjects were...

Role of the Cerebellum in Tuning Anticipatory and Reactive Grip Force Responses.
November 1, 1999... Abstract The aim of our study was to determine if load perturbations that could destabilize grasp control are adequately controlled by cerebellar patients. We examined patients with unilateral cerebellar lesions who had largely recovered...

Memory Lost and Regained Following Bilateral Hippocampal Damage.
November 1, 1999... Abstract * We present a longitudinal neuropsychological study (31 examinations over a period of 18 months) of patient DE DF demonstrated bilateral atrophy of the hippocampal formation and globus pallidus resulting from carbon monoxide...