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Kinesiology 1080B Notes C.docx

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Kinesiology 1080A/B

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Friday March 9 2012Multiple Attentional ResourcesResources specific to certain tasks pool of attentional resourcesDriving is a spatial skillInstead of one single pool of attentional resources there are multiple poolsThey can all be performed with a high degree of efficiency as long none of the pools are fullAttention is specific to a specific task that you are performingThere are at least three pools of attentionResearcher BadlyAttention as a FilterConsiders attention to be a fixed and undifferentiated capacity but mediated by1Arousal and anxiety level2Specific task demands3SelectivityArousal physiological or psychologyLevel of activation or excitement of the CNS varies widely from very low during sleep to very high during threat to selfYellow line taking notesin between a low to high physiological or psychological arousal will allow high performanceBlue line powerliftinghigh level of physiological or psychological arousal will allow high performanceRed line playing chesslow level of physiological or psychological arousal will allow high performanceSpecific Task DemandsThe environment of a performer can influence capacity of attentional resourcesYou can increase or decrease the amount of attention you have depending on the specific task that you are doingWhen you are focusing on a finite task then your attentional capacity is very small and any little thing can distract the person and direct their attention there automaticallySelectivityConscious controlvisual searchUnconscious controlenvironmental stimuli cueingoExogenous result in this automatic capture of attention low level load of control are mediated subcortically any unexpected change in visual stimuli leads to an excitation of neurons in the superior colliculus and then it automatically orients your attention to the visual stimulus it cannot be modifiedoExogenous orientation of attention is involuntaryoEndogenous under conscious and voluntary control high level load of attentional control involves cortical controloEndogenous orientation of attention is voluntaryF22 RaptorExogenous visual cues were used in the design of the cockpit Attentional Capacity and InstructionJack LeavittInterested in how kids developed the skills to multi task AAttention directed toward the initiation and sometimes termination of a movement is criticalBAutomate elementary components of a skill prior to integrating additional movement constraintsPutting Practice to the Test Leavitt 1979Six age groups 6 8 10 11 14 19 performing in each of four experimental conditions1Skating only2Skating only and identifying geometric figures3Skating and stickhandling4Skating stickhandling and identifying figuresSkating speed was examined in each agegroup in each experimental condition as age increases experience and ability also increasesResultsSkating impacted by stickhandling task up to 14 years of ageThus skating attention demandingThe 6 year olds had the largest gap between all of the four tasksThis gap diminishes with ageNo reliable difference between the four tasks for 11 year olds to 19 year oldsConclusionsEarly in skill development elements of movement that must become automated should be emphasized prior to introducing new attention demanding tasksFor 6 year olds you need to work on the primary task of skating because this primary task is cognitive to the young athletes which takes a lot of attentional resources so if you add in anything else the skating will diminish Coordination and AttentionBimanual coordination simultaneous movement of the two hands 1Two hands seem to be linked together2Timing structure of the two hands is the sameYou fall into phase because you are unable to perform two distinct coordination patterns at a high movement frequency Antiphase pattern of movementwhen your fingers are moving in opposition between 1 or 2 HzInphase pattern of movementwhen your fingers fall into phase 3 Hz or higherIndividuals with split brain surgery they would not fall into this inphase movement pattern at high frequenciesCNS likes to have one common temporal structureMonday March 12 2012
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