Planning (cognitive)

The Striatum; part of the basal ganglia; neural pathways between the striatum and the frontal lobe have been implicated in planning function.

Cognitive planning is one of the executive functions, it encompases the neurological processes involved in the formulation, evaluation and selection of a sequence of thoughts and actions to achieve a desired goal. Various studies utilizing a combination of neuropsychological, neuropharmacological and functional neuroimaging approaches have suggested there is a positive relationship between impaired planning ability and damage to the frontal lobe.

A specific area within the mid-dorsolateral frontal cortex located in the frontal lobe has been implicated as playing an intrinsic role in both cognitive planning and associated executive traits such as working memory.

Disruption of the neural pathways, via various mechanisms such as traumatic brain injury, or the effects of neurodegenerative diseases between this area of the frontal cortex and the basal ganglia specifically the striatum (cortico-striatal pathway), may disrupt the processes required for normal planning function.[1]

Individuals who were born Very Low Birth Weight (<1500 grams) and Extremely Low BirthWeight (ELBW) are at greater risk for various cognitive deficits including planning ability.[2][3]

Neuropsychological Tests

A version of the Tower of Hanoi utilizing four discs.
Animation of a four disc version of the Tower of Hanoi.

There are a variety of neuropsychological tests which can be used to measure variance of planning ability between the subject and controls.

Screenshot of the PEBL psychology software running the Tower of London test

In test participants with damage to the right anterior, and left or right posterior areas of the frontal lobes showed no impairment. The results implicating the left anterior frontal lobes involvement in solving the TOL were supported in concomitant neuroimaging studies which also showed a reduction in regional cerebral blood flow to the left pre-frontal lobe. For the number of moves, a significant negative correlation was observed for the left prefrontal area: i.e. subjects that took more time planning their moves showed greater activation in the left prefrontal area.[6]

References

  1. "Cognitive planning in humans: neuropsychological, neuroanatomical and neuropharmacological perspectives". Prog. Neurobiol. 53 (4): 431–50. November 1997. doi:10.1016/s0301-0082(97)00042-7. PMID 9421831.
  2. Harvey, JM; O'Callaghan, MJ; Mohay, H (May 1999). "Executive function of children with extremely low birthweight: a case control study". Dev Med Child Neurol 41 (5): 292–7. doi:10.1017/s0012162299000663. PMID 10378753.
  3. Aarnoudse-Moens, CS; Weisglas-Kuperus, N; van Goudoever, JB; Oosterlaan, J (Aug 2009). "Meta-analysis of neurobehavioral outcomes in very preterm and/or very low birth weight children". Pediatrics 124 (2): 717–28. doi:10.1542/peds.2008-2816. PMID 19651588.
  4. Welsh, MC; Huizinga, M (Jun 2001). "The development and preliminary validation of the Tower of Hanoi-revised". Assessment 8 (2): 167–76. doi:10.1177/107319110100800205. PMID 11428696.
  5. Anderson, JR; Albert, MV; Fincham, JM (Aug 2005). "Tracing problem solving in real time: fMRI analysis of the subject-paced Tower of Hanoi". J Cogn Neurosci 17 (8): 1261–74. doi:10.1162/0898929055002427. PMID 16197682.
  6. Shallice, T. (1982). "Specific impairments of planning". Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences 298 (1089): 199–209. doi:10.1098/rstb.1982.0082. PMID 6125971.

Bibliography

Cognitive Planning: The Psychological Basis of Intelligent Behaviour by J P Das, Binod C Kar, Rauno K Parrila. Publisher: Sage Publications Pvt. Ltd; illustrated edition Language: English ISBN 0-8039-9287-4 ISBN 978-0-8039-9287-0

This article is issued from Wikipedia - version of the Thursday, December 24, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.