PSYC 211 Chapter Notes - Chapter 6.6: Saccade, Superior Temporal Sulcus, Occipital Lobe
3 Jun 2016
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We need to know not only what things are, but also where they are and how they are moving to be able to predict whether they would be and react to and navigate in our environments. Area v5 or mt contains neurons that respond to movement. Accurately determining an object"s velocity and direction is an important ability. To track moving objects, the information received by v5 must be up-to-date. In fact, axons that must transmit information from the magnocellular system are thick and heavily myelinated: they thus conduct faster, for example, signals reach v5 before v4. The input from the sc contributes to the movement sensitivity of neurons in area v5. A study found that the destruction of v1 or the sc alone does not eliminate the movement sensitivity of v5 neurons, but destruction of both areas does. A region adjacent to v5, mst, receives information about movement from v5 and performs further analysis.
