Timing & Time Perception最新文献

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Effects of Emotional Valence and Arousal on Time Perception. 情绪效价和唤醒对时间知觉的影响。
IF 1.4
Timing & Time Perception Pub Date : 2014-07-01 DOI: 10.1163/22134468-00002034
Heather Van Volkinburg, Peter Balsam
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引用次数: 27
Dissociation of Neural Mechanisms for Intersensory Timing Deficits in Parkinson's Disease. 帕金森病感觉间时间缺陷的神经机制分离。
IF 1.4
Timing & Time Perception Pub Date : 2014-05-19 DOI: 10.1163/22134468-00002025
Deborah L Harrington, Gabriel N Castillo, Jason D Reed, David D Song, Irene Litvan, Roland R Lee
{"title":"Dissociation of Neural Mechanisms for Intersensory Timing Deficits in Parkinson's Disease.","authors":"Deborah L Harrington,&nbsp;Gabriel N Castillo,&nbsp;Jason D Reed,&nbsp;David D Song,&nbsp;Irene Litvan,&nbsp;Roland R Lee","doi":"10.1163/22134468-00002025","DOIUrl":"https://doi.org/10.1163/22134468-00002025","url":null,"abstract":"<p><p>This study investigated the ability of individuals with Parkinson's disease (PD) to synthesize temporal information across the senses, namely audition and vision. Auditory signals (A) are perceived as lasting longer than visual signals (V) when they are compared together, since attentsion is captured and sustained more easily than for visual information. We used the audiovisual illusion to probe for disturbances in brain networks that govern the resolution of time in two intersensory conditions that putatively differ in their attention demands. PD patients and controls judged the relative duration of successively presented pairs of unimodal (AA, VV) and crossmodal (VA, AV) signals whilst undergoing fMRI. There were four main findings. First, underestimation of time was exaggerated in PD when timing depended on controlled attention (AV), whereas subtle deficits were found when audition dominated and attention was more easily sustained (VA). Second, group differences in regional activation were observed only for the AV-unimodal comparison, where the PD group failed to modulate basal ganglia, anterior insula, and inferior cerebellum activity in accord with the timing condition. Third, the intersensory timing conditions were dissociated by patterns of abnormal functional connectivity. When intersensory timing emphasized controlled attention, patients showed weakened connectivity of the cortico-thalamus-basal ganglia (CTBG) circuit and the anterior insula with widespread cortical regions, yet enhanced cerebellar connectivity. When audition dominated intersensory timing, patients showed enhanced connectivity of CTBG elements, the anterior insula, and the cerebellum with the caudate tail and frontal cortex. Fourth, abnormal connectivity measures showed excellent sensitivity and specificity in accurately classifying subjects. The results demonstrate that intersensory timing deficits in PD were well characterized by context-dependent patterns of functional connectivity within a presumed core timing system (CTBG) and a ventral attention hub (anterior insula), and enhanced cerebellar connectivity irrespective of the hypothesized attention demands of timing.</p>","PeriodicalId":29927,"journal":{"name":"Timing & Time Perception","volume":"2 2","pages":"145-168"},"PeriodicalIF":1.4,"publicationDate":"2014-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/22134468-00002025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37955453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 23
Impaired interval timing and spatial-temporal integration in mice deficient in CHL1, a gene associated with schizophrenia. 缺乏与精神分裂症相关的CHL1基因的小鼠的间隔时间和时空整合受损。
IF 1.4
Timing & Time Perception Pub Date : 2013-01-01 DOI: 10.1163/22134468-00002003
Mona Buhusi, Ioana Scripa, Christina L Williams, Catalin V Buhusi
{"title":"Impaired interval timing and spatial-temporal integration in mice deficient in CHL1, a gene associated with schizophrenia.","authors":"Mona Buhusi,&nbsp;Ioana Scripa,&nbsp;Christina L Williams,&nbsp;Catalin V Buhusi","doi":"10.1163/22134468-00002003","DOIUrl":"https://doi.org/10.1163/22134468-00002003","url":null,"abstract":"<p><p>Interval timing is crucial for decision-making and motor control and is impaired in many neuropsychiatric disorders, including schizophrenia - a neurodevelopmental disorder with a strong genetic component. Several gene mutations, polymorphisms or rare copy number variants have been associated with schizophrenia. L1 cell adhesion molecules (L1CAMs) are involved in neurodevelopmental processes, and in synaptic function and plasticity in the adult brain. Mice deficient in the Close Homolog to L1 (CHL1) adhesion molecule show alterations of hippocampal and thalamo-cortical neuroanatomy as well as deficits in sensorimotor gating and exploratory behavior. We analyzed interval timing and attentional control of temporal and spatial information in male CHL1 deficient (KO) mice and wild type (WT) controls. In a 20-s peak-interval timing procedure (standard and reversed), KO mice showed a maintained leftward shift of the response function relative to WT, indicative of a deficit in memory encoding/decoding. In trials with 2, 5, or 10-s gaps, KO mice shifted their peak times less than WT controls at longer gap durations, suggesting a decreased (attentional) effect of interruptions. In the spatial-temporal task, KO mice made more working and reference memory errors than controls, suggestive of impaired use of spatial and/or temporal information. When the duration spent on the central platform of the maze was manipulated, WT mice showed fewer spatial errors at the trained duration than at shorter or longer durations, indicative of discrimination based upon spatial-temporal integration. In contrast, performance was similar at all tested durations in KO mice, indicative of control by spatial cues, but not by temporal cues. These results suggest that CHL1 KO mice selectively attend to the more relevant cues of the task, and fail to integrate more complex spatial-temporal information, possibly as a result of reduced memory capacity related to hippocampal impairment, and altered temporal-integration mechanisms possibly due to thalamo-cortical anomalies.</p>","PeriodicalId":29927,"journal":{"name":"Timing & Time Perception","volume":"1 1","pages":"21-38"},"PeriodicalIF":1.4,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/22134468-00002003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35390554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 23
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