The Sources of Human Volition

@article{Haggard2009TheSO,
  title={The Sources of Human Volition},
  author={Patrick Haggard},
  journal={Science},
  year={2009},
  volume={324},
  pages={731 - 733}
}
Two regions of the brain contribute to the conscious experience of carrying out an action. Every day we make actions that seem to depend on our “free will” rather than on any obvious external stimulus. This capacity not only differentiates humans from other animals, but also gives us the clear sense of controlling our bodies and lives. It therefore forms a key element of our personal identity. However, such voluntary actions are a puzzle for modern neuroscience. Where do they come from? A study… 

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References

SHOWING 1-10 OF 12 REFERENCES

Altered awareness of voluntary action after damage to the parietal cortex

It is proposed that when a movement is planned, activity in the parietal cortex, as part of a cortico-cortical sensorimotor processing loop, generates a predictive internal model of the upcoming movement that might form the neural correlate of motor awareness.

The angular gyrus computes action awareness representations.

It is shown that right Ag is associated with both awareness of discrepancy between intended and movement consequences and awareness of action authorship, and it is proposed that this region is involved in higher-order aspects of motor control that allows one to consciously access different aspects of one's own actions.

The Illusion of Conscious Will

  • D. Wegner
  • Psychology, Philosophy
    The MIT Press
  • 2018
Do we consciously cause our actions, or do they happen to us? Philosophers, psychologists, neuroscientists, theologians, and lawyers have long debated the existence of free will versus determinism.

Abnormalities in the awareness of action

The What, When, Whether Model of Intentional Action

  • M. BrassP. Haggard
  • Psychology, Biology
    The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry
  • 2008
The authors propose a model that distinguishes three major components: a component related to the decision about which action to execute (what component), a component that is related to a decision about when to execute an action (when component), and a component about whether toexecute an action or not (whether component).

A neurophysiological study of the premotor cortex in the rhesus monkey.

It is concluded that many premotor cortex neurons appear to reflect motor set and show activity patterns during and before the execution of an abstractly guided movement that are strikingly similar to what has been observed in association with movements made directly to visuospatial targets.

Movement Intention After Parietal Cortex Stimulation in Humans

Parietal and premotor cortex regions are serious contenders for bringing motor intentions and motor responses into awareness and consciousness arise from increased parietal activity before movement execution.

Perception of self-generated movement following left parietal lesion.

It is concluded that the parietal cortex plays an important role in generating and maintaining a kinaesthetic model of ongoing movements, and parietal lesions alter the representational aspects of gestures, and suggest a failure in evaluating and comparing internal and external feedback about movement.

Functional organization of human supplementary motor cortex studied by electrical stimulation

  • I. FriedA. Katz D. Spencer
  • Biology, Medicine
    The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1991
Electrical stimulation mapping with currents below the threshold of afterdischarges showed somatotopic organization of supplementary motor cortex with the lower extremities represented posteriorly, head and face most anteriorly, and the upper extremities between these two regions.

The illusion of conscious will

Wegner (Wegner, D. (2002). The illusion of conscious will. MIT Press) argues that conscious will is an illusion, citing a wide range of empirical evidence. I shall begin by surveying some of his