Morawetz, Carmen

[["dc.bibliographiccitation.firstpage","87"],["dc.bibliographiccitation.journal","Brain Research"],["dc.bibliographiccitation.lastpage","99"],["dc.bibliographiccitation.volume","1371"],["dc.contributor.author","Morawetz, Carmen"],["dc.contributor.author","Baudewig, Jürgen"],["dc.contributor.author","Treue, Stefan"],["dc.contributor.author","Dechent, Peter"],["dc.date.accessioned","2017-09-07T11:43:36Z"],["dc.date.available","2017-09-07T11:43:36Z"],["dc.date.issued","2011"],["dc.description.abstract","Facial emotion perception plays a fundamental role in interpersonal social interactions. Images of faces contain visual information at various spatial frequencies. The amygdala has previously been reported to be preferentially responsive to low-spatial frequency (LSF) rather than to high-spatial frequency (HSF) filtered images of faces presented at the center of the visual field. Furthermore, it has been proposed that the amygdala might be especially sensitive to affective stimuli in the periphery. In the present study we investigated the impact of spatial frequency and stimulus eccentricity on face processing in the human amygdala and fusiform gyrus using functional magnetic resonance imaging (fMRI). The spatial frequencies of pictures of fearful faces were filtered to produce images that retained only LSF or HSF information. Facial images were presented either in the left or right visual field at two different eccentricities. In contrast to previous findings, we found that the amygdala responds to LSF and HSF stimuli in a similar manner regardless of the location of the affective stimuli in the visual field. Furthermore, the fusiform gyrus did not show differential responses to spatial frequency filtered images of faces. Our findings argue against the view that LSF information plays a crucial role in the processing of facial expressions in the amygdala and of a higher sensitivity to affective stimuli in the periphery."],["dc.identifier.doi","10.1016/j.brainres.2010.10.110"],["dc.identifier.gro","3151589"],["dc.identifier.pmid","21059346"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8401"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0006-8993"],["dc.title","Effects of spatial frequency and location of fearful faces on human amygdala activity"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","45"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Magnetic Resonance Imaging"],["dc.bibliographiccitation.lastpage","53"],["dc.bibliographiccitation.volume","26"],["dc.contributor.author","Morawetz, Cannen"],["dc.contributor.author","Holz, Petra"],["dc.contributor.author","Lange, Claudia"],["dc.contributor.author","Baudewig, Juergen"],["dc.contributor.author","Weniger, Godehard"],["dc.contributor.author","Irle, Eva"],["dc.contributor.author","Dechent, Peter"],["dc.date.accessioned","2018-11-07T11:20:21Z"],["dc.date.available","2018-11-07T11:20:21Z"],["dc.date.issued","2008"],["dc.description.abstract","As the amygdala is involved in various aspects of emotional processing, its characterization using neuroimaging modalities, such as functional magnetic resonance imaging (fMRI), is of great interest. However, in fMRI, the amygdala region suffers from susceptibility artifacts that are composed of signal dropouts and image distortions. Various technically demanding approaches to reduce these artifacts have been proposed, and most require alterations beyond a mere change of the acquisition parameters and cannot be easily implemented by the user without changing the MR sequence code. In the present study, we therefore evaluated the impact of simple alterations of the acquisition parameters of a standard gradient-echo echo-planar imaging technique at 3 T composed of echo times (TEs) of 27 and 36 ms as well as section thicknesses of 2 and 4 mm while retaining a section orientation parallel to the intercommissural plane and an in-plane resolution of 2 X 2 mm(2). In contrast to previous studies, we based our evaluation on the resulting activation maps using an emotional stimulation paradigm rather than on MR raw image quality only. Furthermore, we tested the effects of spatial smoothing of the functional raw data in the course of postprocessing using spatial filters of 4 and 8 mm. Regarding MR raw image quality, a TE of 27 ms and 2-mm sections resulted in the least susceptibility artifacts in the anteromedial aspect of the temporal lobe. The emotional stimulation paradigm resulted in robust bilateral amygdala activation for the approaches with 2-mm sections only - but with larger activation volumes for a TE of 36 ms as compared with that of 27 ms. Moderate smoothing with a 4-mm spatial filter represented a good compromise between increased sensitivity and preserved specificity. In summary, we showed that rather than applying advanced modifications of the MR sequence, a simple increase in spatial resolution (i.e., the reduction of section thickness) is sufficient to improve the delectability of amygdala activation. (c) 2008 Elsevier Inc. All rights reserved."],["dc.identifier.doi","10.1016/j.mri.2007.04.014"],["dc.identifier.isi","000252288500006"],["dc.identifier.pmid","17574366"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/55513"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Inc"],["dc.relation.issn","0730-725X"],["dc.title","Improved functional mapping of the human amygdala using a standard functional magnetic resonance imaging sequence with simple modifications"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","817"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Visual Neuroscience"],["dc.bibliographiccitation.lastpage","826"],["dc.bibliographiccitation.volume","24"],["dc.contributor.author","Morawetz, Carmen"],["dc.contributor.author","Holz, Petra"],["dc.contributor.author","Baudewig, Jürgen"],["dc.contributor.author","Treue, Stefan"],["dc.contributor.author","Dechent, Peter"],["dc.date.accessioned","2021-06-01T10:50:25Z"],["dc.date.available","2021-06-01T10:50:25Z"],["dc.date.issued","2007"],["dc.description.abstract","Visual spatial attention has been described as a process that favors the processing of sensory information that falls into the “spotlight of attention.” Recent studies have provided support for an ability to split this attentional focus to selectively process spatially separate locations. Using functional magnetic resonance imaging, the signature for the presence of multiple spotlights is the presence of multiple retinotopically specific foci of activation in striate and extrastriate visual areas. We used this approach to investigate the presence of such separable activations as a function of the eccentricity of the spatial foci of attention. Visual stimuli consisted of letters and digits displayed in rapid serial visual presentation (RSVP). Five RSVP streams were presented simultaneously, one in the center of the visual field and one in each visual field quadrant. Subjects had to deploy their attention either to a single peripheral location or two non-contiguous regions performing a match-mismatch judgment. The results show that dividing attention leads to multiple spotlights of attention for central as well as more peripheral locations of the visual field. However, depending on the exact location and width of the attentional spotlights, resulting activation maps might reveal merged activation patterns even in the presence of distinct attentional spotlights."],["dc.identifier.doi","10.1017/S0952523807070745"],["dc.identifier.gro","3151564"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/86652"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.eissn","1469-8714"],["dc.relation.issn","0952-5238"],["dc.title","Split of attentional resources in human visual cortex"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","569"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Social Cognitive and Affective Neuroscience"],["dc.bibliographiccitation.lastpage","585"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Morawetz, Carmen"],["dc.contributor.author","Bode, Stefan"],["dc.contributor.author","Baudewig, Juergen"],["dc.contributor.author","Heekeren, Hauke R."],["dc.date.accessioned","2022-10-06T13:35:18Z"],["dc.date.available","2022-10-06T13:35:18Z"],["dc.date.issued","2016"],["dc.identifier.doi","10.1093/scan/nsw169"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/116058"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-602"],["dc.relation.eissn","1749-5024"],["dc.relation.issn","1749-5016"],["dc.relation.orgunit","Deutsches Primatenzentrum"],["dc.title","Effective amygdala-prefrontal connectivity predicts individual differences in successful emotion regulation"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","226"],["dc.bibliographiccitation.journal","Frontiers in Human Neuroscience"],["dc.bibliographiccitation.volume","4"],["dc.contributor.affiliation","Morawetz, Carmen;"],["dc.contributor.affiliation","Baudewig, Juergen;"],["dc.contributor.affiliation","Treue, Stefan;"],["dc.contributor.affiliation","Dechent, Peter;"],["dc.contributor.author","Morawetz, Carmen"],["dc.contributor.author","Baudewig, Jürgen"],["dc.contributor.author","Treue, Stefan"],["dc.contributor.author","Dechent, Peter"],["dc.date.accessioned","2017-09-07T11:43:29Z"],["dc.date.available","2017-09-07T11:43:29Z"],["dc.date.issued","2010"],["dc.date.updated","2022-02-09T13:23:09Z"],["dc.description.abstract","Recent neuroimaging studies disagree as to whether the processing of emotion-laden visual stimuli is dependent upon the availability of attentional resources or entirely capacity-free. Two main factors have been proposed to be responsible for the discrepancies: the differences in the perceptual attentional demands of the tasks used to divert attentional resources from emotional stimuli and the spatial location of the affective stimuli in the visual field. To date, no neuroimaging report addressed these two issues in the same set of subjects. Therefore, the aim of the study was to investigate the effects of high and low attentional load as well as different stimulus locations on face processing in the amygdala using functional magnetic resonance imaging to provide further evidence for one of the two opposing theories. We were able for the first time to directly test the interaction of attentional load and spatial location. The results revealed a strong attenuation of amygdala activity when the attentional load was high. The eccentricity of the emotional stimuli did not affect responses in the amygdala and no interaction effect between attentional load and spatial location was found. We conclude that the processing of emotional stimuli in the amygdala is strongly dependent on the availability of attentional resources without a preferred processing of stimuli presented in the periphery and provide firm evidence for the concept of the attentional load theory of emotional processing in the amygdala."],["dc.identifier.doi","10.3389/fnhum.2010.00226"],["dc.identifier.eissn","1662-5161"],["dc.identifier.gro","3151558"],["dc.identifier.pmid","21160563"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9972"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8367"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.publisher","Frontiers Research Foundation"],["dc.relation.issn","1662-5161"],["dc.rights","CC BY 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/3.0"],["dc.title","Diverting attention suppresses human amygdala responses to faces"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","681"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Current Opinion in Neurology"],["dc.bibliographiccitation.lastpage","691"],["dc.bibliographiccitation.volume","18"],["dc.contributor.author","von Steinbuechel, Nicole"],["dc.contributor.author","Richter, S."],["dc.contributor.author","Morawetz, C."],["dc.contributor.author","Riemsma, R."],["dc.date.accessioned","2018-11-07T10:53:47Z"],["dc.date.available","2018-11-07T10:53:47Z"],["dc.date.issued","2005"],["dc.description.abstract","Purpose of review Health-related quality of life is a new outcome variable in neurology. Several generic measures aim at assessing this variable in adults with neurological diseases. Disease-specific measures are still rare; however, individuals with neurological diseases frequently suffer from cognitive impairment, yet are often excluded from health-related quality of life investigations. When included in such studies, cognitive functioning is not monitored via neuropsychological evaluation, possibly leading to methodological problems. Papers from May 2004 until July 2005 are reviewed with respect to psychometric quality and information about persons after traumatic brain injury, stroke, Parkinson's disease or dementia. Recent findings Several new cross-sectional and longitudinal outcome studies are reviewed. The Medical Outcome Study Short Form with 36 items, the Sickness Impact Profile and the Nottingham Health Profile were identified as the most frequently used measures in neurology. For traumatic brain injury, two new generic instrument validations (Life Satisfaction Index-A, Subjective Quality of Life Profile) and one internationally validated disease-specific development (Quality of Life after Brain Injury) were found; for stroke, one disease-specific tool (Burden of Stroke Scale) was identified, In Parkinson's disease, the disease-specific health-related quality of life measure Parkinson's Disease Questionnaire-39 is well validated. In dementia, three dementia-specific instruments (Quality of Life for Dementia, Quality of Life in Late-Stage Dementia Scale and Quality of Life in Alzheimer's Disease Scale) seem to be valid. Summary In neurology, only a few measures have been developed and validated for respondents with cognitive impairment, often showing poorer validity results than studies involving healthy persons. Health-related quality of life assessment should therefore be validated in the specific diseases and, if necessary, combined with a neuropsychological evaluation and a disease-specific health-related quality of life measure."],["dc.identifier.doi","10.1097/01.wco.0000194140.56429.75"],["dc.identifier.isi","000233678800010"],["dc.identifier.pmid","16280680"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49420"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Lippincott Williams & Wilkins"],["dc.relation.issn","1350-7540"],["dc.title","Assessment of subjective health and health-related quality of life in persons with acquired or degenerative brain injury"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","338"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Cephalalgia"],["dc.bibliographiccitation.lastpage","345"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Antal, Andrea"],["dc.contributor.author","Polania, Rafael"],["dc.contributor.author","Saller, Katharina"],["dc.contributor.author","Morawetz, Carmen"],["dc.contributor.author","Schmidt-Samoa, Carsten"],["dc.contributor.author","Baudewig, Juergen"],["dc.contributor.author","Paulus, Walter J."],["dc.contributor.author","Dechent, Peter"],["dc.date.accessioned","2018-11-07T08:59:44Z"],["dc.date.available","2018-11-07T08:59:44Z"],["dc.date.issued","2011"],["dc.description.abstract","Objective: Differences between people with and without migraine on various measures of visual perception have been attributed to abnormal cortical processing due to the disease. The aim of the present study was to explore the dynamics of the basic interictal state with regard to the extrastriate, motion-responsive middle temporal area (MT-complex) with functional magnetic resonance imaging (fMRI) at 3 tesla using coherent/incoherent moving dot stimuli. Method: Twenty-four migraine patients (12 with aura [MwA], 12 without aura [MwoA]) and 12 healthy subjects participated in the study. The individual cortical folding pattern was accounted for by using a cortical matching approach. Results: In the inferior-posterior portion of the MT-complex, most likely representing MT, control subjects showed stronger bilateral activation compared to MwA and MwoA patients. Compared with healthy controls MwoA and MwA patients showed significantly stronger activation mainly at the left side in response to visual stimulation in the superior-anterior portion of the MT-complex, representing the medial-superior temporal area (MST). Conclusion: Our findings strengthen the hypothesis that hyperresponsiveness of the visual cortex in migraine goes beyond early visual areas, even in the interictal period."],["dc.identifier.doi","10.1177/0333102410379889"],["dc.identifier.isi","000288874700011"],["dc.identifier.pmid","20693230"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13044"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23975"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Sage Publications Ltd"],["dc.relation.issn","0333-1024"],["dc.title","Differential activation of the middle-temporal complex to visual stimulation in migraineurs"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]