Journal ArticleDOI
Right frontal lobe activation and right hemisphere performance. Decrement during a depressed mood.
TLDR
For instance, this paper found that depressed mood is characterized by asymmetrical EEG activation over the frontal lobes, with relatively greater activity in the right frontal region than the left frontal region.Abstract:
• Evidence from psychiatric patients has suggested that depressive affect may coincide with a decrement in the functioning of the right cerebral hemisphere. We have observed that college students who reported greater depression also reported less vivid imagery. Students undergoing experimental induction of depressive and euphoric moods in the laboratory showed an auditory attentional bias and impaired imagery during the depression condition, while their arithmetic task performance was unchanged. A second mood-induction experiment indicated a depressed mood to be characterized by asymmetrical EEG activation over the frontal lobes, with relatively greater activity in the right frontal region. These observations suggest that anterior regions of the brain may modulate the differential effects of emotional arousal on the information-processing capacities of the cerebral hemispheres.read more
Citations
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Hemispheric processing and methylphenidate effects in attention-deficit hyperactivity disorder.
TL;DR: It appears that attention-deficit hyperactivity disorder may involve a bihemispheric dysfunction characterized by reduced dopaminergic and excessive noradrenergic functioning and favorable medication effects may be mediated by a restoration in neurotransmitter balance and by increased control over the allocation of attentional resources between hemispheres.
Journal ArticleDOI
Right hemispheric specialization for mental imagery: a review of the evidence.
Howard Ehrlichman,John Barrett +1 more
TL;DR: It is concluded that there is, presently, insufficient empirical basis for considering imagery a right hemispheric function, and distinctions among visual imagery, visual recognition memory, and visuospatial abilities are drawn.
Journal ArticleDOI
EEG correlates of emotional tasks related to attentional demands
Harry W. Cole,William J. Ray +1 more
TL;DR: The results suggest emotional valence and attentional demands are differentially represented in terms of EEG functioning and an interaction of attentional demand with hemisphere was found for EEG alpha activity in the temporal and parietal areas.
Journal ArticleDOI
Multiple Contributions to Clinical Presentation of Flat Affect in Schizophrenia
TL;DR: Results of this study suggest that the clinical evaluation of flat affect may be contaminated by a number of behaviorally similar processes, which included right hemisphere dysfunction, retardation and extrapyramidal effects, as the sequelae of hospitalization.
Book
Creativity and psychopathology
TL;DR: Barron as discussed by the authors argued that the seeming illogic of associating maladjustment with creativity can be understood from the standpoint of the source of creative inspiration, the unconscious, and pointed out that it would not be evolutionarily adaptive to wed the curse of mental illness to the gift of creativity.
References
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Journal ArticleDOI
Emotional behavior and hemispheric side of the lesion.
TL;DR: The depressivecatastrophic reactions of the left brain-damaged patients were found chiefly in subjects with severe aphasia, and appeared generally after repeated failures in verbal communication, and seemed due, as Goldstein argued, to the desperate reaction of the organism, confronted with a task that it cannot face.
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Right-left asymmetrics in the brain
TL;DR: Anatomical asymmetries may help to explain the range of human talents, recovery from acquired disorders of language function, certain childhood learning disabilities, some dementing illnesses of middle life, and the evidence for behavioral lateralization in nonhuman primates.
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Psychosis and temporal lobe epilepsy. A controlled investigation.
TL;DR: A controlled investigation comparing a population of 50 temporal lobe epileptics with psychotic episodes with 50 randomly selected temporal lobe epilepsyptics who had never experienced psychotic disturbances showed that these patients had no history of psychotic disturbances.
Journal ArticleDOI
Possible Basis for the Evolution of Lateral Specialization of the Human Brain
TL;DR: Patients whose neocortical commissures have been surgically divided for the control of epilepsy have revealed an organizational differentiation of the hemispheres for perceptual and cognitive functions.