Working memory: a view from neuroimaging

Article Abstract:

Two methods of experiments about short-term memory or working memory are performed using positron emission tomography (PET). The first is called the subtraction method. The results show that neural circuits activate the verbal and the object memory in the left lateral region of the brain and the spatial memory in the right lateral region. The second is the parametric variation method where the focus of the experiment is on the verbal working memory. The separation between components of memory storage and those that connect memory rehearsal are defined.

Brain, Short-term memory, Localization (Brain function), Cognitive psychology

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In search of the self: a positron emission tomography study

Article Abstract:

Research was conducted to examine the hypothesis that the encoding of self-related material might also activate the right frontal areas of the brain. A sample of eight right-handed volunteers evaluated personality trait adjectives under four separate positron emission tomography scan conditions, namely, importance to self, importance to a well-known public figure, number of syllables and social desirability. Results indicate that the notion of self is associated with left prefrontal activations.

Left- and right-handedness, Handedness, Self, Self (Psychology), Frontal lobes

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Dissociation of storage and rehearsal in verbal working memory: evidence from positron emission tomography

Article Abstract:

Positron emission tomographic analysis shows that independent regions of the brain regulate storage and rehearsal components of verbal task memory. The majority of anterior brain activation subtracts out during the subtraction of anterior brain activation from storage and rehearsal based activation. Rehearsal activities appear to stimulate frontal regions of the brain in much the same manner as verbal activity does.

Memory, Verbal ability, Dissociation (Psychology), Dissociative disorders

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