Podcast
Questions and Answers
Why were the M1 cells considered to have pretty coarse directional tuning?
Why were the M1 cells considered to have pretty coarse directional tuning?
- Their firing rate was low during movement
- They were not active during movement
- They fired vigorously in only one direction
- They discharged during movements in a wide range of directions (correct)
What was the primary observation about monkeys' movements despite the coarse directional tuning of M1 cells?
What was the primary observation about monkeys' movements despite the coarse directional tuning of M1 cells?
- Monkeys used a different brain region for movement
- Monkeys were very fast in their movements
- Monkeys showed very precise and accurate movements (correct)
- Monkeys showed erratic movements
What does summing the direction vectors of many M1 neurons during movement help predict?
What does summing the direction vectors of many M1 neurons during movement help predict?
- The muscle groups involved
- The distance traveled
- The speed of movement
- The movement direction (correct)
How did the population vector approach predict movement direction?
How did the population vector approach predict movement direction?
What was a notable feature of M1 cells' firing pattern during monkey joystick performance?
What was a notable feature of M1 cells' firing pattern during monkey joystick performance?
In monkey joystick performance experiments, what was an unexpected finding regarding brain activity and behavior?
In monkey joystick performance experiments, what was an unexpected finding regarding brain activity and behavior?
What determines the direction of movement in M1?
What determines the direction of movement in M1?
What is the consequence of having a larger population of neurons in terms of motor control?
What is the consequence of having a larger population of neurons in terms of motor control?
Which area is especially important for controlling movement?
Which area is especially important for controlling movement?
What experimental method was used to monitor changes in cortical activation during voluntary movements in humans?
What experimental method was used to monitor changes in cortical activation during voluntary movements in humans?
Which area remained active when subjects rehearsed finger movements mentally without actually moving their fingers?
Which area remained active when subjects rehearsed finger movements mentally without actually moving their fingers?
What evidence suggests that the Supplementary Motor Area (SMA) and Premotor Cortex (PMA) are involved in initiating movements?
What evidence suggests that the Supplementary Motor Area (SMA) and Premotor Cortex (PMA) are involved in initiating movements?
What is the primary focus of the new view on how movement is coded in the primary motor cortex (M1)?
What is the primary focus of the new view on how movement is coded in the primary motor cortex (M1)?
What effect does weak electrical stimulation of the Primary Motor Cortex (M1) have on muscles?
What effect does weak electrical stimulation of the Primary Motor Cortex (M1) have on muscles?
What is required for goal-directed, voluntary movement?
What is required for goal-directed, voluntary movement?
What did Wilder Penfield contribute to the field of neurosurgery?
What did Wilder Penfield contribute to the field of neurosurgery?
In the context of monkey joystick performance, what do monkeys learn to move toward?
In the context of monkey joystick performance, what do monkeys learn to move toward?
What was the traditional belief regarding movement coding in M1 focusing on?
What was the traditional belief regarding movement coding in M1 focusing on?
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