1 Introduction.- 2 Anatomical projections from sensory cortical areas to the thalamus.- 2.1 General characteristics of corticothalamic projections.- 2.2 Types of corticothalamic projections.- 2.3 Cells of origin for the corticothalamic projections.- 2.4 Neurotransmitter actions.- 2.5 Specific characteristics of corticothalamic projections to the sensory thalamus.- 3. Corticofugal projection to subthalamic relay stations.- 3.1 Auditory system.- 3.2 Visual system.- 3.3 Somatosensory system.- 4 Corticofugal modulations of sensory responses.- 4.1 Corticofugal modulation of auditory responses.- 4.2 Corticofugal modulation of visual responses.- 4.3 Somatosensory system.- 5 Functional considerations.- 5.1 Corticofugal modulation of sensory transmission. Egocentric selection.- 5.2 Corticofugal modulation of neuronal rhythmic activities and neuronal synchronization.- 5.3 Contribution of corticofugal projections in attentional filtering.- References.- Subject index
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