Oxford Centre for Computational Neuroscience

Professor Edmund T. Rolls

Discoveries on Vision



Cerebral Cortex






Memory, Attention, and Decision-Making







Computational Neuroscience of Vision


Face-selective neurons (in the amygdala (38, 91, 97), inferior temporal visual cortex (38A, 73, 91, 96, 162), and orbitofrontal cortex (397) (see 412, 451501, B11, B12). 

 

Face expression selective neurons in the cortex in the superior temporal sulcus (114, 126) and orbitofrontal cortex (397). Reduced functional connectivity in this region in autism (541).

 

Visual neurons in the inferior temporal visual cortex with translation, view, and size invariant representations of faces and objects (91, 108, 127, 191, 248, B12).

 

In natural scenes, the receptive fields of inferior temporal cortex neurons shrink to approximately the size of objects, revealing a mechanism that simplifies object recognition (320, 516, B12).

 

Top-down attentional control of visual processing by inferior temporal cortex neurons in complex natural scenes (445).

 

In natural scenes, inferior temporal visual cortex neurons encode information about the locations of objects relative to the fovea, thus encoding information useful in scene representations (395, 455, 516).

 

Information encoding using a sparse distributed graded representation with independent information encoded by neurons (at least up to tens) (172, 196, 204, 225, 227, 321, 255, 419, 474, 508, 553561, B12). (These discoveries argue against ‘grandmother cells’.) The representation is decodable by neuronally plausible dot product decoding, and is thus suitable for associative computations performed in the brain (231, B12). Quantitatively relatively little information is encoded and transmitted by stimulus-dependent cross-correlations between neurons (265, 329, 348, 351, 369, 517). Much of the information is available from the firing rates very rapidly, in 20-50 ms (193, 197, 257, 407). All these discoveries are important in our understanding of computation and information transmission in the brain (B12).

 

A theory and model of invariant visual object recognition in the ventral visual system closely related to empirical discoveries (162, 179, 192, 226, 245, 275, 277, 280, 283, 290, 304, 312, 396, 406, 414, 446, 455, 473, 485, 516, 535, 536, 554, B12).


Binaural sound recording to allow 3-dimensional sound localization (11A, UK provisional patent, Binaural sound recording).