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Cover picture: Composite figure of a horizontal slice of the ventral hypothalamus illustrating recording configuration for examining retinohypothalamic input to the suprachiasmatic nucleus (SCN). To illustrate bilateral retinal innervation of the SCN, retinal fibers were labeled after monocular injection of HRP into the vitreous body of the eye. HRP-labeled optic fibers are visible in this dark-field image in the opticnerve (CN II) of the injected eye, crossing in the optic chiasm, and termination bilaterally in the SCN just posterior to the optic chiasm. Whole-cell patch-clamp recordings of evoked EPSCs in SCN neurons after optic nerve stimulation were conducted to demonstrate 5-HT_1B receptor-mediated presynaptic inhibition of retinohypothalamic tract neurotransmission to the SCN. For details, see the article by Pickard et al, in this issue (pages 4034-4045).