Exam 7: Perceiving Motion and Perception for Action

The corollary discharge signal is sent to the brain

The corollary discharge signal

The corollary discharge signal

Brief,rapid movements that change the focus of gaze from one location to another in the visual scene are called eye movements.

The region of the posterior parietal lobe that is involved in planning to reach toward a specific location is the intraparietal area.

Briefly describe the study conducted by Newsome et al.(1989)investigating the role of MT neurons in motion perception.Who were the subjects? What were the stimuli? What two mea- sures were recorded? Summarize their findings.

______________ tuning is determined by whether a delay is built into the transmission of signals from Neuron 1 and Neuron 2,while tuning is determined by the length of the delay.

The neural circuit to explain motion aftereffects would require that the M_L neuron______________ while the M_R neuron .

Recent films such as Avatar and The Hobbit have blended human acting with computer ani- mation.Using the "motion-capture" technique,actors perform while wearing suits that have 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?

Beckers and Zeki (1995)used transcranial stimulation to temporarily deactivate area MT during the presentation of a moving-dot stimulus and found that the perception of

The parietal lobe is divided into the parietal lobe and the parietal lobe by the sulcus.

A rising fastball

The eye movements that you use when you read are called eye movements.

Lakshmi is standing,facing forward,on a crowded train that has come to a station and stopped.There is also a stopped train on an adjacent track.Suddenly,the train on the adjacent track begins to move backward (relative to Lakshmi's train).When Lakshmi sees the adjacent train,what is she likely to perceive,and how will she physically respond to what she perceives?

Newsome et al.(1989)used the coherence of motion technique to study monkeys' perception of motion.When comparing the results of single-cell recordings from area MT with the monkeys' judgments they found that

Place your index finger on the far outside edge of one of your eyelids.Now apply gentle pres- sure to your eye (through the lid;do not touch your eye directly).As you apply pressure,you should see your environment tilt in correspondence with your eye's movement.(A)How would you explain the perception of movement as your eye moves? (B)Does this demonstration sup- port the corollary discharge signal as the stabilizing mechanism during eye movement?

Sommer and Wurz (2006)trained monkeys to make a saccade from an initial fixation point (FP₁)to a later fixation point (FP₂).They recorded from single cells in the frontal eye field of monkeys,and their findings offered support for the importance of the corollary discharge signal (CDS),since a flash of light to the

The critical motion center in the primate brain is

Movshon et al.(1985)studied "plaid" displays,using the combination-of-motions effect with two superimposed sets of moving stripes;they found that is consistent with the idea that MT neurons can combine the responses of V1 neurons and/or other MT neurons.

The neural circuit to explain motion aftereffects requires that either the M_L or M_R neuron