A generalized temporal context model for classifying image collections

2005 ◽  
Vol 11 (1) ◽  
pp. 82-92 ◽  
Author(s):  
Matthew Boutell ◽  
Jiebo Luo ◽  
Christopher Brown
Keyword(s):  
Temporal Context ◽  
Context Model

scholarly journals A retrieved context model of the emotional modulation of memory

2017 ◽  
Author(s):  
Deborah Talmi ◽  
Lynn J. Lohnas ◽  
Nathaniel D. Daw
Keyword(s):  
Emotional Memory ◽  
Temporal Context ◽  
Composition Effect ◽  
Context Model ◽  
Emotional Modulation ◽  
Emotional Information ◽  
Retrieval Processes ◽  
The Rich ◽  
Context Models ◽  
Evolutionary Fitness

AbstractEmotion enhances episodic memory, an effect thought to be an adaptation to prioritise the memories that best serve evolutionary fitness. But viewing this effect largely in terms of prioritising what to encode or consolidate neglects broader rational considerations about what sorts of associations should be formed at encoding, and which should be retrieved later. Although neurobiological investigations have provided many mechanistic clues about how emotional arousal modulates item memory, these effects have not been wholly integrated with the cognitive and computational neuroscience of memory more generally.Here we apply the Context Maintenance and Retrieval Model (CMR, Polyn, Norman & Kahana, 2009) to this problem by extending it to describe the way people may represent and process emotional information. A number of ways to operationalise the effect of emotion were tested. The winning emotional CMR (eCMR) model reconceptualises emotional memory effects as arising from the modulation of a process by which memories become bound to ever-changing temporal and emotional contexts. eCMR provides a good qualitative fit for the emotional list-composition effect and the emotional oddball effect, illuminating how these effects are jointly determined by the interplay of encoding and retrieval processes. eCMR explains the increased advantage of emotional memories in delayed memory tests through the limited ability of retrieval to reinstate the temporal context of encoding.By leveraging the rich tradition of temporal context models, eCMR helps integrate existing effects of emotion and provides a powerful tool to test mechanisms by which emotion affects memory in a broad range of paradigms.

scholarly journals Robust Online Learned Spatio-Temporal Context Model for Visual Tracking

2014 ◽  
Vol 23 (2) ◽  
pp. 785-796 ◽  
Author(s):  
Longyin Wen ◽  
Zhaowei Cai ◽  
Zhen Lei ◽  
Dong Yi ◽  
Stan Z. Li
Keyword(s):  
Visual Tracking ◽  
Temporal Context ◽  
Context Model ◽  
Spatio Temporal

scholarly journals Human memory reconsolidation can be explained using the temporal context model

2011 ◽  
Vol 18 (3) ◽  
pp. 455-468 ◽  
Author(s):  
Per B. Sederberg ◽  
Samuel J. Gershman ◽  
Sean M. Polyn ◽  
Kenneth A. Norman
Keyword(s):  
Human Memory ◽  
Memory Reconsolidation ◽  
Temporal Context ◽  
Context Model

scholarly journals Medial Temporal Lobe Amnesia Is Associated with a Deficit in Recovering Temporal Context

2019 ◽  
Vol 31 (2) ◽  
pp. 236-248 ◽  
Author(s):  
Daniela J. Palombo ◽  
Joseph M. Di Lascio ◽  
Marc W. Howard ◽  
Mieke Verfaellie
Keyword(s):  
Episodic Memory ◽  
Temporal Lobe ◽  
Medial Temporal Lobe ◽  
Response Probability ◽  
Temporal Contiguity ◽  
Temporal Context ◽  
Context Model ◽  
Scale Invariant ◽  
Psychological Review ◽  
Conditional Response

Medial-temporal lobe (MTL) lesions are associated with severe impairments in episodic memory. In the framework of the temporal context model, the hypothesized mechanism for episodic memory is the reinstatement of a prior experienced context (i.e., “jump back in time”), which relies upon the MTL [Howard, M. W., Fotedar, M. S., Datey, A. V., & Hasselmo, M. E. The temporal context model in spatial navigation and relational learning: Toward a common explanation of medial temporal lobe function across domains. Psychological Review, 112, 75–116, 2005]. This hypothesis has proven difficult to test in amnesia because of the floor-level performance by patients in recall tasks. To circumvent this issue, in this study, we used a “looped-list” format, in which a set of verbal stimuli was presented multiple times in a consistent order. This allowed for comparison of statistical properties such as probability of first recall and lag-conditional response probability (lag-CRP) between amnesic patients and healthy controls. Results revealed that the lag-CRP, but not the probability of first recall, is altered in amnesia, suggesting a selective disruption of temporal contiguity. To further characterize the results, we fit a scale-invariant version of the temporal context model [Howard, M. W., Shankar, K. H., Aue, W. R., & Criss, A. H. A distributed representation of internal time. Psychological Review, 122, 24–53, 2015] to the probability of first recall and lag-CRP curves. The modeling results suggested that the deficit in temporal contiguity in amnesia is best described as a failure to recover temporal context. These results provide the first direct evidence for an impairment in a jump-back-in-time mechanism in patients with MTL amnesia.

Simultaneous detection of landmarks and key-frame in cardiac perfusion MRI using a joint spatial-temporal context model

2011 ◽  
Author(s):  
Xiaoguang Lu ◽  
Hui Xue ◽  
Marie-Pierre Jolly ◽  
Christoph Guetter ◽  
Peter Kellman ◽  
...  
Keyword(s):  
Simultaneous Detection ◽  
Perfusion Mri ◽  
Temporal Context ◽  
Cardiac Perfusion ◽  
Context Model ◽  
Key Frame

scholarly journals Medial temporal lobe amnesia is associated with a deficit in recovering temporal context

2018 ◽  
Author(s):  
Daniela Palombo ◽  
Joseph M. Di Lascio ◽  
Marc Howard ◽  
Mieke Verfaellie
Keyword(s):  
Episodic Memory ◽  
Temporal Lobe ◽  
Medial Temporal Lobe ◽  
Response Probability ◽  
Temporal Contiguity ◽  
Temporal Context ◽  
Context Model ◽  
Scale Invariant ◽  
Conditional Response ◽  
Verbal Stimuli

Medial temporal lobe (MTL) lesions are associated with severe impairments in episodic memory. In the framework of the Temporal Context Model (TCM), the hypothesized mechanism for episodic memory is the reinstatement of a prior experienced context (i.e., “jump back in time”), which relies upon the MTL (Howard, Fotedar, Datey, & Hasselmo, 2005). This hypothesis has proven difficult to test in amnesia due to floor-level performance by patients in recall tasks. To circumvent this issue, in the present study we used a “looped-list” format, in which a set of verbal stimuli was presented multiple times in a consistent order. This allowed for comparison of statistical properties such as probability of first recall and lag conditional response probability (lag-CRP) between amnesic patients and healthy controls. Results revealed that the lag-CRP, but not the probability of first recall, is altered in amnesia, suggesting a selective disruption of temporal contiguity. To further characterize the results, we fit a scale-invariant version of TCM (Howard, Shankar, Aue, & Criss, 2015) to the probability of first recall and lag-CRP curves. The modeling results suggested that the deficit in temporal contiguity in amnesia is best described as a failure to recover temporal context. These results provide the first direct evidence for an impairment in a jump-back-in-time mechanism in patients with MTL amnesia.

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