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  • 1
    Online Resource
    Online Resource
    Emotion : a Reconsideration Of. (1988)
    Milton :Taylor & Francis Group,
    Details
    Keywords: Emotions-Physiological aspects. ; Psychophysiology. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (157 pages)
    Edition: 1st ed.
    ISBN: 9781000446234
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=6747949
    DDC: 152.4
    Language: English
    Note: Cover -- Half Title -- Title Page -- Copyright Page -- Dedication -- Table of Contents -- Acknowledgments -- Preface -- Part I: Conflicting Views of Emotion -- Chapter One: Mainstream Psychology and Commonsense Versus Self-Inspection and William James -- 1. Emotion and bodily motion -- 2. Objections to James' view of emotion -- Chapter Two: Walter Cannon and the Rise of Cerebrocentrism -- 1. Two fundamental biases -- 2. Cannon's five arguments -- 3. The structure of cerebrocentric theories of emotion -- Chapter Three: Schachter and Singer and the Cognitive Approach -- 1. The theory -- 2. On mental "fusions" in general and on the main difficulty of the cognitive theory -- 3. The "ambiguous figure" interpretation -- 4. The experiment -- Part II: Aspects of the Somatic Theory of Emotion -- Chapter Four: Emotion as Experience -- 1. Obscuring the obvious -- 2. The testimony of self-inspection -- Chapter Five: The Microgenesis of Emotion -- 1. The temporal order of events in emotions and moods -- 2. The microgenesis of aesthetic feelings -- 3. Significance and mechanisms of the different aspects of the microgenesis of emotion -- Chapter Six: The Nature of the Evidence -- 1. Hohmann's observations -- 2. Somatic events and feeling states -- 3. Brain stimulation and evoked affective states -- 4. Other evidence of the brain's efficiency to engender emotion -- Summary -- References -- Index.
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  • 2
    Electronic Resource
    Electronic Resource
    Relationship Between Stimulus Intensity and the P300 (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 22 (1985), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: The effect of stimulus intensity on the P300 component of the averaged auditory evoked potential was examined in healthy young adults. Although no effect on P300 amplitude was present, increasing loudness was inversely related to P300 latency. These data demonstrate a partial dependence of P300 on stimulus parameters, and underscore the importance of determining the hearing ability of subjects and patients in studies employing P300 as an index of information processing speed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1985.tb01608.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Applications of Magnetoencephalography to the Study of Cognition (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 620 (1991), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1991.tb51578.x
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Lateralization of Cerebral Activation in Auditory Verbal and Non-Verbal Memory Tasks Using Magnetoencephalography (1999)
    Springer
    Brain topography 12 (1999), S. 89-97 
    Details
    ISSN: 1573-6792
    Keywords: Magnetoencephalography ; Human ; Words ; Tones ; Cerebral dominance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The magnetic flux normal to the scalp surface was measured with a whole-head neuromagnetometer while right-handed subjects (N = 15) were engaged in either an auditory word- or a tone-recognition task. Sources of the recorded magnetic fields were modeled as equivalent current dipoles at 4 ms intervals and the number of sources in the later portion of the magnetic response was used as an index of the degree of brain activation. Significantly more sources were found in the left as compared to the right hemisphere in the word but not the tone task on a group basis. On an individual basis, 13/15 subjects had more sources in the left as compared to the right hemisphere during the word task, while in the tone task 3/10 subjects showed this pattern. Sources of activity were found in the left superior and middle temporal gyri in all subjects with available MRI scans. Sources were also found in the supramarginal gyrus and in medial temporal areas, including the hippocampus, in the majority of cases. MEG appears to be a promising tool for detecting activity in cerebral areas specialized for language and memory function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1023458110869
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Intersession replicability of dipole parameters from three components of the auditory evoked magnetic field (1990)
    Springer
    Brain topography 3 (1990), S. 311-319 
    Details
    ISSN: 1573-6792
    Keywords: Magnetoencephalography ; Auditory evoked fields ; Current dipoles ; Magnetic resonance imaging ; Source localization ; Replicability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The replicability of dipole localizations between sessions in an unselected group of subjects was studied. Auditory evoked magnetic fields (AEMFs) in response to contralaterally and ipsilaterally presented 1 kHz tone bursts were recorded from the right hemisphere of 12 subjects with normal hearing in two replicate sessions several days apart. Three long-latency components of the AEMF were studied, occurring at latencies near 50 msec (P1m), near 100 msec (N1m) and near 165 msec (P2m). A spherical model of the head was used to fit equivalent-current dipoles to the data. Statistical analysis of dipole parameters revealed virtually no differences between the two testing sessions. The variability between sessions had a mean absolute difference of 3 to 10 mm for the spatial parameters. Comparison of dipole parameters between components showed that there was a replicable, but nonsignificant, trend for a difference in the location of the N1m from contralateral vs. ipsilateral stimulation, and a statistically significant confirmation that the P2m is located anterior to the N1m for contralateral stimulation. Magnetic resonance images from each subject were used to locate the dipoles near the primary auditory cortex in the Sylvian fissure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01135440
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Laterality of hippocampal responses to infrequent and unpredictable omissions of visual stimuli (1996)
    Springer
    Brain topography 9 (1996), S. 15-20 
    Details
    ISSN: 1573-6792
    Keywords: Magnetoencephalography ; Localization ; Hippocampus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Previous studies have demonstrated that externally measured magnetic field patterns are indicative of activity in the vicinity of the right hippocampal formation during infrequent and unpredictable intrusions or omissions of visual stimuli in an oddball evoked response paradigm. These fields occur coincident with late endogenous evoked potential components that are consistently recorded in similar situations. In the present study, magnetic fields temporally corresponding to the late P300 component of simultaneously recorded evoked potentials were accounted for by sources in the vicinity of the left and right hippocampus in addition to previously reported sources in the vicinity of the primary visual cortex. Projection of these sources onto MRIs suggested that both hippocampal structures are simultaneously active and that there is an amplitude and strength-related dominance of the right hippocampal sources to visual stimulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01191638
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Task-specific magnetic fields from the left human frontal cortex (1996)
    Springer
    Brain topography 9 (1996), S. 31-37 
    Details
    ISSN: 1573-6792
    Keywords: Magnetoencephalography ; Frontal cortex ; Verbal task ; Hemispheric asymmetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In this study we attempted to extend our previous results on regional specialization of frontal cortical function in humans, by means of magnetoencephalography (MEG). We used a verbal task and predicted that some part of the left frontal lobe would be active during engagement in that task, since the left hemisphere is known to be implicated in language. We did not require a motor response because in previous experiments we observed bilateral frontal magnetic activity, and we suspected that it was due to the addition of movement-related fields to our recordings. Six right handed subjects (three males and three females) participated in the study. The task consisted in silently counting the number of word pairs that matched with respect to semantic category. Experimental runs were composed by series of 120 trials or word pairs. All six subjects presented dipolar magnetic field distributions on the left fronto-temporal area of the scalp, but not on the right, during different portions of the trial duration. These fields were successfully modeled as equivalent current dipoles (ECDs). The spatial ECD coordinates were translated onto magnetic resonance image (MRI) coordinates for each subject. The dipole positions were typically near the cortical surface corresponding to areas 6 and 44 of Brodmann. No dipole-like sources were observed in the right frontal lobe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01191640
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  • 8
    Electronic Resource
    Electronic Resource
    Multiple Bilaterally Asymmetric Cortical Sources Account for the Auditory N1m Component (1998)
    Springer
    Brain topography 10 (1998), S. 183-189 
    Details
    ISSN: 1573-6792
    Keywords: Magnetoencephalography ; Auditory cortex ; Functional organization ; Current dipole sources ; Whole-head MEG
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The hypothesis that the N1, the major negative component of the cortical evoked response to auditory stimuli, originates from the primary auditory cortex has been supported by several studies. In a previous study we showed that, when monaural stimulation with pure tones is used, the distribution of the N1 peak over the scalp could be accounted for by successive activation of adjacent sources on the floor of the Sylvian fissure. In an attempt to establish the generality of the phenomenon, in this study we investigated further the generation of the N1 component using a variety of auditory stimuli, including pure tones, complex sounds (musical notes), and words, as well as binaural stimulus presentation. Additionally, we used a new recording system which allows recording of the distribution of the magnetic flux over the entire head simultaneously, thus eliminating the need for multiple recording sessions and the related problems of habituation and of changes in attention level. We found that a series of single dipolar sources could account for the entire duration of the N1m component. The location of the sources fell within the primary auditory cortex and, during the evolution of the component, they followed a posterior-anterior, medial-lateral, superior-inferior trajectory, bilaterally, along the superior surface of the temporal lobes. Additionally, the distribution of N1 sources on the two hemispheres showed a marked asymmetry, with the right hemisphere sources covering a larger area. The established consistency of successive source excitation across subjects, studies, types of stimuli, and recording systems, as well as the newly demonstrated hemispheric asymmetry of source extent, suggest the presence of a reliable phenomenon indicative of the functional organization of the auditory cortex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022246825461
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Functional Hemispheric Asymmetry Assessment in a Visual Language Task Using MEG (1998)
    Springer
    Brain topography 11 (1998), S. 57-65 
    Details
    ISSN: 1573-6792
    Keywords: Magnetoencephalography ; Continuous recognition task ; Words ; Faces ; Language ; Hemispheric laterality ; Temporal lobe
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We used magnetoencephalography (MEG) to assess the degree of hemispheric activation in eleven normal, right-handed subjects with no history of neurological disorder or learning disability during performance of a word- and a face-recognition tasks. Neuromagnetic activity was recorded using a whole-head system, and the sources of the recorded magnetic fields were modeled as single equivalent current dipoles. Early (〈200 msec) cerebral activation, defined by the number of dipoles identified by the data-fitting algorithm, was localized in the occipital cortex during both tasks, as expected. During the language task, the extent of the later (〉200 msec) cerebral activation was approximately double in the left hemisphere in almost all subjects, involving temporal and temporoparietal areas. In contrast, during the face-recognition task, the corresponding activation was mostly symmetrical across the two occipital lobes, also involving the posterior-inferior aspect of the right temporal lobe. Our results suggest that the MEG is a suitable method of assessing noninvasively hemispheric specialization for language.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022270620396
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