Incoming F1 are converted into neural signals by the retina and transmitted to the primary visual cortex. Often these visual stimuli are preserved in temporary memory traces so that the information is available for use for a few seconds after the stimulus is gone. The primate visual system has evolved two distinct pathways for serving this kind of visual memory. One is a dorsal pathway for spatial memory (the "where" pathway), and the other is a ventral pathway for object memory (the "what" pathway). The dorsal pathway carries visual information specialized for spatial location from the visual areas through the parietal cortex and to the dorsal lateral prefrontal cortex; in the monkey brain, this latter region is just anterior to the frontal eye field. The ventral visual memory pathway carries parallel information, specialized for object recognition, from the visual cortex through temporal regions and on to the middle and inferior frontal cortex.