A functional MRI study of preparatory signals for spatial location and objects

• Published in: Neuropsychologia Vol. 43; no. 14; pp. 2041 - 2056
• Main Authors: Corbetta, Maurizio, Tansy, Aaron P., Stanley, Christine M., Astafiev, Serguei V., Snyder, Abraham Z., Shulman, Gordon L.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 2005; Elsevier Science
• Subjects: Analysis of Variance; Anatomical correlates of behavior; Attention; Attention - physiology; Behavioral psychophysiology; Biological and medical sciences; Brain Mapping; Cerebral Cortex - blood supply; Cerebral Cortex - physiology; Cues; Discrimination Learning - physiology; Drug Combinations; Eye Movements - physiology; Faces; Frontal; Functional Laterality - physiology; Fundamental and applied biological sciences. Psychology; Humans; Image Processing, Computer-Assisted - methods; Magnetic Resonance Imaging; Parietal; Peroxides - blood; Photic Stimulation - methods; Places; Psychology. Psychoanalysis. Psychiatry; Psychology. Psychophysiology; Reaction Time - physiology; Space Perception - physiology; Time Factors; Urea - analogs & derivatives; Urea - blood; Visual cortex; Parietal; Frontal; Visual cortex; Faces; Attention; Places; Human; Central nervous system; Frontal cortex; Nuclear magnetic resonance imaging; Encephalon; Parietal cortex; Face; Functional imaging; Object location

We investigated preparatory signals for spatial location and objects in normal observers using functional magnetic resonance imaging (fMRI). Activity for attention-directing cues was separated from activity for subsequent test arrays containing the target stimulus. Subjects were more accurate in dis...