The nerve ring of the nematodeCaenorhabditis elegans: Sensory input and motor output

1975 ◽  
Vol 162 (1) ◽  
pp. 71-110 ◽  
Author(s):  
Randle W. Ware ◽  
David Clark ◽  
Kathryn Crossland ◽  
Richard L. Russell
Keyword(s):  
Sensory Input ◽  
Nerve Ring ◽  
Motor Output

scholarly journals Macphail (1987) Revisited: Pigeons Have Much Cognitive Behavior in Common With Humans

2021 ◽  
Vol 11 ◽  
Author(s):  
Thomas R. Zentall
Keyword(s):  
Cognitive Ability ◽  
Present Article ◽  
Sensory Input ◽  
Motor Output ◽  
Cognitive Behavior ◽  
Intellectual Abilities ◽  
Intelligent Behavior

The hypothesis proposed by Macphail (1987) is that differences in intelligent behavior thought to distinguish different species were likely attributed to differences in the context of the tasks being used. Once one corrects for differences in sensory input, motor output, and incentive, it is likely that all vertebrate animals have comparable intellectual abilities. In the present article I suggest a number of tests of this hypothesis with pigeons. In each case, the evidence suggests that either there is evidence for the cognitive behavior, or the pigeons suffer from biases similar to those of humans. Thus, Macphail’s hypothesis offers a challenge to researchers to find the appropriate conditions to bring out in the animal the cognitive ability being tested.

Interaction of Vision and Movement via a Mirror

Perception ◽  
2005 ◽  
Vol 34 (9) ◽  
pp. 1153-1155 ◽  
Author(s):  
Eric Lewin Altschuler
Keyword(s):  
Visual Feedback ◽  
Sensory Input ◽  
Motor Output ◽  
The Other ◽  
Left Hand ◽  
Right Hand ◽  
Neural Processes ◽  
The Right ◽  
Striking Effect

I have noticed a striking effect that vision can have on movement: when a person makes circular motions with both hands, clockwise with the left hand, counterclockwise with the right hand, while watching the reflection of one hand in a parasagitally placed mirror, if one arm makes a vertical excursion, the other arm tends to make the same vertical excursion, but not typically if the excursing arm is viewed in plain vision. This observation may help in understanding how visual feedback via a mirror may be beneficial for rehabilitation of some patients with movement deficits secondary to certain neurologic conditions, and illustrates that the traditional division of neural processes into sensory input and motor output is somewhat arbitrary.

scholarly journals Coordinated cerebellar climbing fiber activity signals learned sensorimotor predictions

2018 ◽  
Author(s):  
William Heffley ◽  
Eun Young Song ◽  
Ziye Xu ◽  
Benjamin N. Taylor ◽  
Mary Anne Hughes ◽  
...  
Keyword(s):  
Reinforcement Learning ◽  
Motor Learning ◽  
Calcium Imaging ◽  
Sensory Input ◽  
Activity Patterns ◽  
Motor Output ◽  
Neural Pathways ◽  
Learning Paradigm ◽  
Correlated Activity ◽  
Task Parameters

AbstractThe prevailing model of cerebellar learning states that climbing fibers (CFs) are both driven by, and serve to correct, erroneous motor output. However, this model is grounded largely in studies of behaviors that utilize hardwired neural pathways to link sensory input to motor output. To test whether this model applies to more flexible learning regimes that require arbitrary sensorimotor associations, we have developed a cerebellar-dependent motor learning paradigm compatible with both mesoscale and single dendrite resolution calcium imaging in mice. Here, we find that CFs are preferentially driven by and more time-locked to correctly executed movements and other task parameters that predict reward outcome, exhibiting widespread correlated activity within parasagittal processing zones that is governed by these predictions. Together, such CF activity patterns are well-suited to drive learning by providing predictive instructional input consistent with an unsigned reinforcement learning signal that does not rely exclusively on motor errors.

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