Dr. Yuji Naya's group: Dual coding of the identity and location information in the primate temporal lobe
Figure 1. Encoding of item and location in two view conditions and two encoding states. Subjects were required to remember the item and location of the sample stimuli in the Active encoding (AE) condition, which were tested in the response phase. While in the Passive encoding (PE) condition, only passive viewing was required. Fixation requirement was indicated by the while dot.
Not only the identity information, current results from Naya group suggest that the location information of an object, which was presumably provided by the large background view, may still exist in the inferior temporal lobe of the ventral path. Interestingly, the above identity and location information are of a very different nature. In the F-V condition of the active-encoding (AE) task, the inferior temporal lobe has significant cells encoded identify and location information, while in passive-encoding (PE) task, only significant location information was detected. These results may suggest that the visual information from the retina, has at least two different processing channels along the ventral path: active coding channel which is responsible for processing identity information on the relational space, and passive coding channel that retain the large-scale background image on the retinotopic space which can provide a specific location information.
Paper link: https://doi.org/10.1093/cercor/bhaa183