Exam 7: Perceiving Motion

In a random dot kinematogram, a particular shape of a region is defined only:

Briefly describe the experiment conducted by Newsome et al. (1989) to investigate the role of MT neurons in motion perception. Summarize their findings.

The perceptual grouping principle of _____ strongly influences whether the dots in an apparent motion quartet appear to move vertically or horizontally.

Recent films such as Avatar and The Hobbit have blended human acting with computer animation. Using the motion-capture technique, actors perform while wearing suits that have sensors in strategically placed spots (i.e., at the joints). The recorded performance is later translated into animation by maintaining the key spatial and temporal relationships from the original to the animation. How is this technique related to the study of perception from biological motion?

With the help of transcranial magnetic stimulation, Beckers and Zeki (1995) conducted a deliberate temporary deactivation of MT done at just the right moment relative to the presentation of a moving-dot stimulus. The research found that the perception of _____ was impaired due to deactivation of MT.

According to the text, the responses of M_L and M_R neurons do NOT depend on the:

In the context of a point-light walker display, when a person walks, piecewise rigidity refers to the:

High-resolution part of the retina is known as the:

An apparent motion quartet contains _____ frames, each containing two stimuli presented in _____ alternation.

The aperture problem can be solved by neurons in area:

Compared with neurons in area V1, neurons in area MT:

Neuron M_L is stimulated the MOST when an individual:

According to the study conducted by Britten (2004), _____ is a critical motion center in the primate brain.

Miguel drives up to a railroad crossing just as a train arrives. The train moves from Miguel's left to his right and takes almost three minutes to pass. As the train passes by, Miguel looks toward the direction of the train. How will this affect his vision after the train passes by? What is the neural explanation for his experience?

Below are two different sets of apparent motion quartet frames (pair A and pair B). Describe what would be perceived for each set if the pair of frames were presented in rapid alternation. pair A pair B

In a neural circuit, the subunit with the motion-selective neuron M_L:

The motion of a visual feature such as a spot of light is affected by its position, its direction of motion, and its:

A display in which a grid is filled with tiny, randomly placed black and white square dots and in which the dots in a region of the grid are then moved rigidly together as a group is known as a(n):