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Perceiving Motion: Afterimages and Illusion

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Questions and Answers

What is the primary reason why motion perception is crucial for survival, especially in animals?

To sense potential threats and take action (correct)
To understand the moods of other animals
To perceive the shapes of objects
To detect changes in the environment

What is the primary function of motion perception in humans?

To understand the retinal input
To perceive the optic array
To provide updates about the environment (correct)
To regulate physiological processes

What is the role of motion perception in understanding the environment?

To focus on stationary objects
To process global optic flow
To provide updates about environmental cues (correct)
To analyze retinal input

What is the relationship between motion perception and the perception of object shapes?

Motion perception is necessary for perceiving object shapes (A) Signup and view all the answers

What is the role of motion perception in perceiving people's moods?

It helps us to detect subtle changes in body language (C) Signup and view all the answers

What is the primary mechanism behind motion perception?

Retinal input (D) Signup and view all the answers

What is the primary focus of J.J. Gibson's ecological approach to motion perception?

The importance of environmental information and optic array changes (C) Signup and view all the answers

What is the term for the structure created by the surfaces, textures, and contours of the environment?

Optic array (B) Signup and view all the answers

Which of the following is NOT a factor in motion perception, according to Gibson's ecological approach?

Cognitive biases (C) Signup and view all the answers

What is the term for the pattern of motion generated by the movement of the observer?

Optic flow (C) Signup and view all the answers

What is the main limitation of considering only retinal input when explaining motion perception?

It neglects the role of environmental cues (B) Signup and view all the answers

What is the primary goal of studying real and apparent motion together?

To uncover general mechanisms of motion perception (C) Signup and view all the answers

What is the primary cause of an afterimage appearing in the same place even when the eye is moving?

Bleached visual pigment in the area of the retina (A) Signup and view all the answers

What is the key to perceiving biological motion, according to Gunnar Johansson's experiment?

The point-light walkers stimuli that create a sense of movement (B) Signup and view all the answers

What is the primary function of the superior temporal sulcus (STS) in perceiving biological motion?

To interpret the movement of living organisms (A) Signup and view all the answers

What is the result of disrupting the superior temporal sulcus (STS) with Transcranial Magnetic Stimulation (TMS)?

Poor performance in perceiving biological motion (D) Signup and view all the answers

Why do we perceive an afterimage as moving, even when it is not actually moving across the retina?

Because of the illusion of movement created by the eye movement and fixed object (D) Signup and view all the answers

What is the primary role of the brain in perceiving biological motion?

To interpret the movement of living organisms and determine their intentions (D) Signup and view all the answers

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