Abstract Circadian (24-h) clocks are cell-autonomous biological oscillators that orchestrate
many aspects of our physiology on a daily basis. Numerous circadian rhythms in …

As Cajal discovered in the late 19th century, the bird retina receives a substantial input from
the brain. Approximately 10,000 fibers originating in a small midbrain nucleus, the isthmo …

Can theories of mental imagery, conscious mental contents, developed within cognitive
science throw light on the obscure (but culturally very significant) concept of imagination …

Microspectrophotometric measurements of retinal photoreceptors from the European starling
(Sturnus vulgaris) revealed four classes of single cone, containing visual pigments with …

Imaging of the human nervous system has traditionally attracted clinicians interested
specifically in the fields of neurology, neurosurgery and radiology. However, interest has …

Although many biochemical, morphological and physiological processes in the vertebrate
retina are controlled by a circadian (24 h) clock, the location of the clock and how the clock …

In humans and other primates, sensory signals from each eye remain separated until they
arrive in the primary visual cortex (V1), but their exact meeting point is unknown. In V1, some …

Since 1892, anatomical studies have demonstrated that the retinas of mammals, including
humans, receive input from the brain via axons emerging from the optic nerve. There are …

The comparative anatomy of sensory systems has played a major role in developing
theories and principles central to evolutionary neuroscience. This includes the central tenet …

The survival of neurons in the developing isthmo-optic nucleus (ION) is believed to depend
on the retrograde transport of trophic molecules from the target, the contralateral retina. We …