PSY280H1 Lecture Notes - Lecture 8: Motion Detector, Biological Neural Network, Motion Detection

• School: UTSG
• Department: Psychology
• Course: PSY280H1
• Professor: Professor Mack

Document Summary

Note: schedule may change, for most up-to-date information check a&s timetable. Incorporate a delay to account for change in time. Constructing a neural circuit for detecting rightward motion. Reichardt motion detectors are: tuned to particular speeds. If a moving object is too slow or too fast, then signals will arrive at the comparators at different times = no signal tuned to specific directions of motion. If an object moves in the wrong direction, then signals will arrive at the comparators at different times = no signal. Simple operation, but can lead to problems: may respond to stationary patterns or flicker. Apparent motion: the (illusory) impression of smooth motion resulting from the rapid alternation of objects appearing in different locations in rapid succession. Motion detector circuit does not need real motion in order to fire. Because the inter-stimulus interval (isi) was modified to a value outside of the range for apparent motion using the discontinuous illumination from the stroboscopic light.