Summary
The middle temporal visual area (MT) in macaque extrastriate cortex is characterized by a high proportion of neurons selective for the direction of stimulus motion, and is thus thought to play an important role in motion perception. Previous studies identified a population of cells in MT that appeared capable of coding the motion of whole visual patterns independent of the motions of contours within them (Gizzi et al. 1983; Movshon et al. 1985). These “pattern-motion selective” neurons are unlike motion sensitive cells that have been observed at earlier stages of the visual system. Using very different criteria, we have also previously indentified an apparently functionally distinct group of MT neurons (Albright 1984). We predicted that these “Type II” neurons correspond to the pattern-motion neurons. In the present study, we have applied both sets of criteria to individual neurons in MT and found that these two differently defined sets of cells actually form the same population. These results support the idea that MT contributes to a specialized type of motion processing which reflects the integrity of normal perception.
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References
Adelson EH, Movshon JA (1982) Phenomenal coherence of moving visual patterns. Nature 300: 523–525
Albright TD (1984) Direction and orientation selectivity of neurons in visual area MT of the macaque. J Neurophysiol 52: 1106–1130
Albright TD, Rodman HR, Gross CG (1986) Type II MT neurons show pattern-motion direction selectivity. Neuroscience Abstr 12: 1369
Bender DB (1983) Visual activation of neurons in the primate pulvinar depends on cortex but not colliculus. Brain Res 279: 258–261
Benevento LA, Fallon JH (1975) The ascending projections of the superior colliculus in the rhesus monkey (Macaca mulatta). J Comp Neurol 160: 339–362
DeValois RL, Yund EW, Helper N (1982) The orientation and direction selectivity of cells in macaque visual cortex. Vision Res 22: 531–544
Emerson RC, Gerstein GL (1977) Simple striate neurons in the cat. I. Comparison of responses to moving and stationary stimuli. J Neurophysiol 40: 119–135
Gallyas F (1969) Silver staining of myelin by means of physical development. Orvostucomany 20: 433–489
Gattass R, Gross CG (1981) Visual topography of the striate projection zone in the posterior superior temporal sulcus (MT) of the macaque. J Neurophysiol 46: 621–638
Gizzi MS, Newsome WT, Movshon JA (1983) Directional selectivity of neurons in macaque MT. Invest Ophthalmol Vision Sci Suppl 24: 107
Hammond P, MacKay DM (1977) Differential responsiveness of simple and complex cells in cat striate cortex to visual texture. Exp Brain Res 30: 275–296
Hammond P (1978) Directional tuning of complex cells in area 17 of the feline visual cortex. J Physiol (Lond) 285: 479–491
Henry JM, Bishop PO, Dreher B (1974) Orientation, axis and direction as stimulus parameters for striate cells. Vision Res 14: 767–777
Hubel H, Wiesel T (1968) Receptive fields and functional architecture of monkey striate cortex. J Physiol 195: 215–243
Maunsell JHR, Van Essen DC (1983a) Functional properties of neurons in middle temporal visual area of the macaque monkey. I. Selectivity for stimulus direction, speed and orientation. J Neurophysiol 49: 1127–1147
Maunsell JHR, Van Essen DC (1983b) The connections of the middle temporal visual area (MT) and their relationship to a cortical hierarchy in the macaque monkey. J Neurosci 3: 2563–2586
Movshon JA, Adelson EH, Gizzi MS, Newsome WT (1985) The analysis of moving visual patterns. In: Chagas C, Gattass R, Gross CG (eds) Study group on pattern recognition mechanisms. Pontificia Academia Scientiarum, Vatican City
Movshon JA, Gizzi MS, Newsome WT (1984) Analysis of pattern direction selectivity in macaque MT. Invest Ophthal Vision Sci (Suppl) 25: 279
Movshon JA, Newsome WT (1984) Functional characteristics of striate cortical neurons projecting to MT in the macaque. Neuroscience Abstr 10: 933
Newsome WT, Wurtz RH, Dursteler MR, Mikami A (1985) The middle temporal visual area in the macaque monkey: deficits in visual motion processing following ibotenic acid injections in MT. J Neurosci 5: 825–840
Newsome WT, Pare EB (1986) MT lesions impair discrimination of direction in a stochastic motion display. Neuroscience Abstr 12: 1183
Rodman HR, Gross CG, Albright TD (1985) Removal of striate cortex does not abolish visual responsiveness in area MT of the macaque. Neuroscience Abstr 11: 1246
Rodman HR, Gross CG, Albright TD (1986) Responses of neurons in area MT after removal of the superior colliculus. Neuroscience Abstr 12: 1369
Siegel RM, Anderson RA (1986) Motion perceptual deficits following ibotenic acid lesions of the middle temporal area (MT) in the behaving monkey. Neuroscience Abstr 12: 1183
Ungerleider LG, Mishkin M (1979) The striate projection zone in the superior temporal sulcus of Macaca mulatta: location and topographic organization. J Comp Neurol 188: 347–366
Ungerleider LG, Desimone R (1986) Cortical connections of visual area MT in the macaque. J Comp Neurol 248: 190–222
Van Essen DC, Maunsell JHR, Bixby JL (1981) The middle temporal visual area in the macaque: myeloarchitecture, connections, functional properties and topographic organization. J Comp Neurol 199: 293–326
Wurtz RH, Komatsu H, Dursteler MR, Yamasahi DSG (in press) Motion to movement: cerebral cortical visual processing for pursuit eye movements. In: Gall WE (ed) Signal and sense: local and global order in perceptual maps. John Wiley & Sons, New York
Zeki SM (1974) Functional organization of a visual area in the posterior bank of the superior temporal sulcus of the rhesus monkey. J Physiol 236: 546–573
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Rodman, H.R., Albright, T.D. Single-unit analysis of pattern-motion selective properties in the middle temporal visual area (MT). Exp Brain Res 75, 53–64 (1989). https://doi.org/10.1007/BF00248530
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DOI: https://doi.org/10.1007/BF00248530