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Selective Attention (Acetylcholine System (Clusters in the brain/periphery…

- - - - enhanced signal efficacy via synchrony among neurons encoding the attended stimulus
      - greater postsynaptic efficacy
      - alters the transmission of signals across stages of the visual system
    - - contributions of the parietal cortex, the PFC, the feature-selective cortex, and the superior colliculus (SC) to global salience computation of objects
      - pop out, salient, unexpected stimuli
    - - depends on the relationship between the RF stimulus and the attended feature
      - neurons in area V4 respond more vigorously to RF stimuli that more closely match the features that an animal is searching for
    - - visual activity is enhanced when one targets RF stimulus with a saccadic eye movement (neurons within superior colliculus & posterior parietal cortex)
      - presaccadic visual enhancement in neurons in V4 & inferior temporal cortex
  - - - NE is synthesized by neurons within the locus coeruleus (LC)
      - neurons within the LC respond selectively to salient sensory stimuli
      - stimulation of the LC can modulate sensory responses in awake animals