3,078
edits
Changes
ACC
,→Liberals and ACC
In order to resolve an emotional conflict the rostal[[ACC]] inhibits the [[amygdala]] (or [[FFFF]] mechanism)<ref>[http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.126.1555&rep=rep1&type=pdf Amit Etkin, Tobias Egner, Daniel M. Peraza, Eric R. Kandel and Joy Hirsch, Resolving Emotional Conflict: A Role for the Rostral Anterior Cingulate Cortex in Modulating Activity in the Amygdala, Neuron 51, 1–12, September 7, 2006]</ref>. This is strengthing by the findings that in panic disorder, the volume of the the ACC is reduced, <ref>[https://www.slicer.org/slicerWeb/images/2/2c/Asami-PsychiatryClinNeurosci2008.pdf Takeshi et al., Anterior cingulate cortex volume reduction in patients with panic disorder, Psychiatry and Clinical Neurosciences 2008; 62: 322–330]</ref> . When the ACC (ACcd) has deficient in activation, there seem to be more impolsivity in ADHD compered to control group<ref>[http://faculty-web.at.northwestern.edu/speech/booth/james/neuropsychology/AttentionArticles/BushFrazier.1999.pdf low ACcd activity and ADHD impulsivity, 1999]</ref>. When anticipating pain, women domnstrate more activation of the ACC<ref>[http://ukpmc.ac.uk/abstract/MED/16012355/reload=0;jsessionid=fBlS5IiTyyjXq46t6m68.12 Gender difrences in ACC before pain, 2005]</ref>.
Hypotheses about its function include guiding reward-based decision making<ref>illiams, Z. M., Bush, G., Rauch, S. L., Cosgrove, G. R. & Eskandar, E. N. Human anterior cingulate neurons and the integration of monetary reward with motor responses. Nature Neurosci.7, 1370–1375 (2004).</ref>, monitoring for conflict between competing responses<ref>otvinick, M., Nystrom, L. E., Fissell, K., Carter, C. S. & Cohen, J. D. Conflict monitoring versus selection-for-action in anterior cingulate cortex. Nature 402, 179–181 (1999)</ref> and predicting task difficulty<ref>rown, J. W. & Braver, T. S. Learned predictions of error likelihood in the anterior cingulate cortex. Science 307,
1118–1121 (2005)</ref>. Precise mechanisms of dACC function remain unknown. It was found that dACC is involved in adapting behaviour.<ref>[http://ziv.mgh.harvard.edu/pdf/nature11239.pdf Sheth, Sameer A., Matthew K. Mian, Shaun R. Patel, Wael F. Asaad, Ziv M. Williams, Darin D. Dougherty, George Bush, and Emad N. Eskandar. "Human dorsal anterior cingulate cortex neurons mediate ongoing behavioural adaptation." Nature (2012).]</ref>.
[[Dorsal ACC decision making system]]
Also called ventral ACC
rACC is negatively correlated with [[amygdala]] activity in conflict resolution tasks. it is suggested that the rACC down-regulate the amygdala<ref>[http://www.cell.com/neuron/retrieve/pii/S089662730600626X Etkin, A et al. Resolving Emotional Conflict: A Role for the Rostral Anterior Cingulate Cortex in Modulating Activity in the Amygdala, 2006]</ref>. (And may reduce [[anger]] or [[anxiety]]?)
==Liberals and ACC==
[[Conservatives and Liberals|Liberals]] have higher [[ACC]] gray volume<ref>Kanai R, Feilden T, Firth C, Rees G (2011) Political orientations are correlated with brain structure in young adults. Curr Biol 21: 677–680.</ref>. ACC is connected to conflict resultion (rACC to social conflict and dACC to non-social conflict). Reward valence modulates conflict-driven attentional adaptation in the ACC<ref>[http://bernhard-hommel.eu/Van%20Steenbergen%20et%20al.%20(2012).%20Reward%20valence%20modulates%20conflict-driven%20attentional%20adaptation.pdf van Steenbergen, Guido P.H. Band and Bernhard Hommel, Reward valence modulates conflict-driven attentional adaptation: Electrophysiological evidence, 2012]</ref>. ACC appear to encode negatively-valenced components, such as cost or effort<ref>Walton ME, Bannerman DM, Alterescu K, Rushworth MFS. Functional specialization within medial frontal cortex of the anterior cingulate for evaluating effort-related decisions. Journal of Neuroscience. 2003;23: 6475– 6490.</ref>. Greater liberalism was associated with stronger conflict-related [[ACC|anterior cingulate activity]], suggesting greater neurocognitive sensitivity to cues for altering a habitual response pattern<ref>[http://www.psych.nyu.edu/amodiolab/Publications_files/Amodio_etal_2007_NatureNeuro.pdf Amodio, D. M., Jost, J. T., Master, S. L., & Yee, C. M. (2007). Neurocognitive correlates of liberalism and conservatism. Nature neuroscience, 10(10), 1246-1247.]</ref>. As well as more avodience of doing, due to the highten percived costs that the higher volume of the ACC can cause<ref>Suggestion: Tal Yaron, 29/6/2014</ref>.
The ACC is important for responce time, therefore it was suggested that the ACC is related to "global energizing factor"<ref>Stuss, Donald T., Michael P. Alexander, Tim Shallice, Terence W. Picton, Malcolm A. Binns, Ronald Macdonald, Agnes Borowiec, and Douglas I. Katz. "Multiple frontal systems controlling response speed." Neuropsychologia 43, no. 3 (2005): 396-417.</ref>
ACC is [http://www.scientificamerican.com/article.cfm?id=how-many-friends-can-your-brain-handle enlarged in people with large social networks].
==Further readings==