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C2 - Task-dependent allocation of resources by attention: functional brain imaging and psychophysics

Stefan Treue and Jens Frahm

Psychophysical investigations in humans have quantified the perceptual and behavioral benefits of attention. Functional magnetic resonance imaging (fMRI) has provided important information about the distribution of visual sensitivities and attentional effects across cortex as well as the network of frontal and sub-cortical areas contributing to the control of the attentional system. Nevertheless fMRI studies have not systematically attempted to determine if attentional task and stimulus conditions exist that cause stronger modulation in early rather than late areas. Furthermore there is a dearth of studies that use identical experimental designs in fMRI, psychophysics and electrophysiology.

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