Key result
Tachistoscopic lexical recognition tasks resulted in greater left cerebral activation, whereas the painful cold pressor stressor resulted in greater right cerebral activation.
Why the study?
How do tachistoscopic lexical recognition and a cold pressor stressor affect cerebral activation and cardiovascular reactivity in right-handed men?
How do tachistoscopic lexical recognition and a cold pressor stressor affect cerebral activation and cardiovascular reactivity in right-handed men?
This experimental study demonstrates a link between right cerebral activation and cardiovascular arousal during physical stress, contrasting with left cerebral activation during visual lexical recognition.
May link right-hemisphere activation to cardiovascular arousal; leaves open relevance to clinical autonomic regulation.
This experiment tested a hypothesis linking the right cerebral regulation of hostility and cardiovascular arousal. It also replicates related research regarding hostility, cardiovascular regulation, and auditory recognition (Shenal Harrison, 2003) through the visual modality. Thirty low- and high-hostile participants (n = 30) were identified using the Cook Medley Hostility Scale (CMHS). Only right-handed male participants with no significant medical or psychological history completed the experiment. All participants completed the cold pressor paradigm. Cardiovascular measures (systolic blood pressure [SBP] and diastolic blood pressure [DBP]) were recorded and tachistoscopic lexical recognition procedures were administered before and after the physical stressor. The primary finding of this research was greater left cerebral activation (decreased cardiovascular reactivity) following the tachistoscopic lexical recognition tasks and greater right cerebral activation following the painful (cold pressor) stressor.
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Shenal et al. (2004) studied Hostility and cardiovascular arousal (n=30). Cold pressor paradigm and tachistoscopic lexical recognition tasks vs. Baseline (before stressor) was evaluated on Cerebral activation and cardiovascular reactivity (systolic and diastolic blood pressure). Tachistoscopic lexical recognition tasks resulted in greater left cerebral activation, whereas the painful cold pressor stressor resulted in greater right cerebral activation.
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