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Rudy Garns

Dorsal anterior cingulate cortex: A role in reward-based decision making -- Bush et al.... - 0 views

www.pnas.org/...523

anterior.cingulate brain neuroscience

shared by Rudy Garns on 22 Mar 07 - Cached
  • anticipate and detect targets, indicate novelty, influence motor responses, encode reward values, and signal errors
Rudy Garns

Is anterior cingulate cortex necessary for cognitive control? -- Fellows and Farah 128 ... - 0 views

brain.oxfordjournals.org/...788

anterior.cingulate brain neuroscience

shared by Rudy Garns on 22 Mar 07 - Cached
  • activated when tasks require the ongoing adjustment of the allocation of attention.
  • All four subjects with dACC damage showed normal adjustments in performance following manipulation of response conflict in both Stroop and go–no go tasks
  • damage to the dACC did not impair the phenomenon of post-error slowing, nor alter the ability to adjust performance in response to explicit speed or accuracy instructions.
  • ...2 more annotations...
  • cognitive control, as assessed by four different measures in two different tasks, appears to be intact in these subjects, arguing against a necessary role for dACC in this process.
  • cognitive control.
  • Rudy Garns on 22 Mar 07
     
    Abstract
Rudy Garns

Anterior cingulate cortex regulation of sympathetic activity -- Luu and Posner 126 (10)... - 0 views

brain.oxfordjournals.org/...2119

anterior.cingulate brain neuroscience

shared by Rudy Garns on 22 Mar 07 - Cached
  • lesions to the ACC do not produce massive or consistent cognitive deficits.
  • patients with ACC lesions do demonstrate performance deficits on the Stroop task and other tasks that have been shown to activate the ACC
    • Rudy Garns
      Rudy Garns on 22 Mar 07
       
      Greene refers to the Stroop Effect and the ACC; ACC is thought to monitor conflict between prepotent social-emotional moral responses and cognitive-utilitariann responses.
  • apathetic and unconcerned when significant events occur, such as making mistakes
  • ...8 more annotations...
  • divide the ACC into subregions that are separately responsible for affective and cognitive processes
  • adaptive
  • the mechanisms by which mental processes are integrated with bodily systems.
  • these processes produce autonomic reactions that signal the requirement for adaptive control of behaviour.
  • regulation of autonomic processes
  • the ACC is involved in detecting when strategic control is required and that the lateral prefrontal cortex is involved in strategic control
  • the anterior cingulate is very metabolically active at rest
  • changes in heart rate in both cognitive and motor tasks related to the strength of activation in the ACC.
Rudy Garns

Anterior cingulate cortex - Wikipedia - 0 views

en.wikipedia.org/...Anterior_cingulate_cortex

anterior.cingulate brain neuroscience

shared by Rudy Garns on 22 Mar 07 - Cached
  • the dorsal anterior cingulate cortex is primarily related to rational cognition while the ventral is more related to emotional cognition.
  • early learning and problem solving
  • processing top-down and bottom-up stimuli and assigning appropriate control to other areas in the brain.
  • ...5 more annotations...
  • ACC response in Stroop task experiments (designed to measure adherence to sequential decision-making paths) remains relatively elevated in typical human subjects, as the alternative - spontaneity - is sacrificed.
  • A typical task that activates the ACC involves eliciting some form of conflict within the participant that can potentially result in an error.
  • inability to detect errors, severe difficulty with resolving stimulus conflict in a Stroop task, emotional instability, inattention, and akinetic mutism
  • difficulty in dealing with conflicting spatial locations in a Stroop-like task and having abnormal ERNs
  • appears to play a role in a wide variety of autonomic functions, such as regulating blood pressure and heart rate, as well as rational cognitive functions, such as reward anticipation, decision-making, empathy and emotion.
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