The response properties of cells in the middle temporal area (area MT) of owl monkey visual cortex

1980 ◽  
Vol 207 (1167) ◽  
pp. 239-248 ◽  
Keyword(s):  
Visual Cortex ◽  
Single Cells ◽  
Area Mt ◽  
Temporal Area ◽  
Middle Temporal ◽  
Owl Monkey ◽  
Monocular Stimulation ◽  
Binocular Stimulation ◽  
Middle Temporal Area ◽  
Monkey Visual Cortex

Recordings from 178 single cells in the middle temporal area (area MT) of owl monkey showed that most cells there are orientation- and direction-selective. They also revealed that a powerful range of binocular inter­actions occur in area MT, with 20% of the cells being responsive to binocular stimulation only, 5% to monocular stimulation only and about 50% of all cells showing some degree of interocular interaction.

Perception of direction is not compensated for neural latency

2008 ◽  
Vol 31 (2) ◽  
pp. 208-209 ◽  
Author(s):  
Bart Krekelberg
Keyword(s):  
Motion Perception ◽  
Neural Activity ◽  
Temporal Relationship ◽  
Strongly Correlated ◽  
Area Mt ◽  
Temporal Area ◽  
Middle Temporal ◽  
Middle Temporal Area ◽  
Actual Direction ◽  
Lag Compensation

AbstractNeural activity in the middle temporal area (MT) is strongly correlated with motion perception. I analyzed the temporal relationship between the representation of direction in MT and the actual direction of a stimulus that continuously changed direction. The representation in MT lagged the stimulus by 45 msec. Hence, as far as the perception of direction is concerned, the hypothesis of lag compensation can be rejected.

Neural Correlates of Subsecond Time Distortion in the Middle Temporal Area of Visual Cortex

2011 ◽  
Vol 23 (12) ◽  
pp. 3829-3840 ◽  
Author(s):  
Navid G. Sadeghi ◽  
Vani Pariyadath ◽  
Sameer Apte ◽  
David M. Eagleman ◽  
Erik P. Cook
Keyword(s):  
Visual Cortex ◽  
Human Subjects ◽  
Internal Clock ◽  
Motion Direction ◽  
Temporal Area ◽  
Middle Temporal ◽  
Middle Temporal Area ◽  
Time Distortion ◽  
The Brain ◽  
Neurophysiological Basis

How does the brain represent the passage of time at the subsecond scale? Although different conceptual models for time perception have been proposed, its neurophysiological basis remains unknown. We took advantage of a visual duration illusion produced by stimulus novelty to link changes in cortical activity in monkeys with distortions of duration perception in humans. We found that human subjects perceived the duration of a subsecond motion pulse with a novel direction longer than a motion pulse with a repeated direction. Recording from monkeys viewing identical motion stimuli but performing a different behavioral task, we found that both the duration and amplitude of the neural response in the middle temporal area of visual cortex were positively correlated with the degree of novelty of the motion direction. In contrast to previous accounts that attribute distortions in duration perception to changes in the speed of a putative internal clock, our results suggest that the known adaptive properties of neural activity in visual cortex contributes to subsecond temporal distortions.

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