The deceptive response: effects of response conflict and strategic monitoring on the late positive component and episodic memory-related brain activity

2003 ◽  
Vol 64 (3) ◽  
pp. 217-253 ◽  
Author(s):  
Ray Johnson ◽  
Jack Barnhardt ◽  
John Zhu
Keyword(s):  
Episodic Memory ◽  
Brain Activity ◽  
Response Conflict ◽  
Positive Component ◽  
Late Positive Component ◽  
Strategic Monitoring

scholarly journals Autobiographically Significant Concepts: More Episodic than Semantic in Nature? An Electrophysiological Investigation of Overlapping Types of Memory

2015 ◽  
Vol 27 (1) ◽  
pp. 57-72 ◽  
Author(s):  
Louis Renoult ◽  
Patrick S. R. Davidson ◽  
Erika Schmitz ◽  
Lillian Park ◽  
Kenneth Campbell ◽  
...  
Keyword(s):  
Episodic Memory ◽  
Semantic Memory ◽  
Recognition Task ◽  
Positive Component ◽  
Late Positive Component ◽  
Episodic Information ◽  
Semantic Concepts ◽  
N400 Component ◽  
Episodic Memories ◽  
Highly Correlated

A common assertion is that semantic memory emerges from episodic memory, shedding the distinctive contexts associated with episodes over time and/or repeated instances. Some semantic concepts, however, may retain their episodic origins or acquire episodic information during life experiences. The current study examined this hypothesis by investigating the ERP correlates of autobiographically significant (AS) concepts, that is, semantic concepts that are associated with vivid episodic memories. We inferred the contribution of semantic and episodic memory to AS concepts using the amplitudes of the N400 and late positive component, respectively. We compared famous names that easily brought to mind episodic memories (high AS names) against equally famous names that did not bring such recollections to mind (low AS names) on a semantic task (fame judgment) and an episodic task (recognition memory). Compared with low AS names, high AS names were associated with increased amplitude of the late positive component in both tasks. Moreover, in the recognition task, this effect of AS was highly correlated with recognition confidence. In contrast, the N400 component did not differentiate the high versus low AS names but, instead, was related to the amount of general knowledge participants had regarding each name. These results suggest that semantic concepts high in AS, such as famous names, have an episodic component and are associated with similar brain processes to those that are engaged by episodic memory. Studying AS concepts may provide unique insights into how episodic and semantic memory interact.

Neural correlates of pride and joy recognition in early childhood

2021 ◽  
Vol 49 (9) ◽  
pp. 1-13
Author(s):  
Yue Jiang
Keyword(s):  
Early Childhood ◽  
Neural Mechanism ◽  
Neural Correlates ◽  
Event Related Potential ◽  
Central Component ◽  
Positive Component ◽  
Negative Component ◽  
Late Positive Component ◽  
Three Stages ◽  
Insight Into

I investigated neural processing during the recognition of pride and joy in early childhood using the event-related potential (ERP) technique. Electroencephalography recording was taken of 21 children aged between 4 and 6 years. They were shown photographs of familiar peers and strangers whose facial expressions displayed the emotion of either pride or joy. ERPs were recorded for the children's judgment of the expression of these two emotions when an image was presented. The results demonstrate that the neural dynamics during children's recognition of pride and joy involve three stages: The early negative component is spontaneously responsive to familiar faces, the midlatency negative central component is responsive to expression of familiar faces, and the late positive component marks greater extended processing of an expression of pride. These findings provide new insight into the neural mechanism of pride and joy recognition in children aged 4 to 6 years.

Tactile perception of skin: research on late positive component of event-related potentials evoked by friction

2019 ◽  
Vol 111 (5) ◽  
pp. 623-629
Author(s):  
Wei Tang ◽  
Xiangyong Lu ◽  
Si Chen ◽  
Shirong Ge ◽  
Xianghong Jing ◽  
...  
Keyword(s):  
Event Related Potentials ◽  
Tactile Perception ◽  
Positive Component ◽  
Late Positive Component ◽  
Related Potentials

scholarly journals Retrieval Search and Strength Evoke Dissociable Brain Activity during Episodic Memory Recall

2013 ◽  
Vol 25 (2) ◽  
pp. 219-233 ◽  
Author(s):  
Emilie T. Reas ◽  
James B. Brewer
Keyword(s):  
Episodic Memory ◽  
Brain Activity ◽  
Memory Search ◽  
Cued Recall ◽  
Anterior Cingulate ◽  
Control Mechanisms ◽  
Memory Strength ◽  
Medial Temporal Lobes ◽  
Brain Responses ◽  
Highly Correlated

Neuroimaging studies of episodic memory retrieval have revealed activations in the human frontal, parietal, and medial-temporal lobes that are associated with memory strength. However, it remains unclear whether these brain responses are veritable signals of memory strength or are instead regulated by concomitant subcomponents of retrieval such as retrieval effort or mental search. This study used event-related fMRI during cued recall of previously memorized word-pair associates to dissociate brain responses modulated by memory search from those modulated by the strength of a recalled memory. Search-related deactivations, dissociated from activity due to memory strength, were observed in regions of the default network, whereas distinctly strength-dependent activations were present in superior and inferior parietal and dorsolateral PFC. Both search and strength regulated activity in dorsal anterior cingulate and anterior insula. These findings suggest that, although highly correlated and partially subserved by overlapping cognitive control mechanisms, search and memory strength engage dissociable regions of frontoparietal attention and default networks.

scholarly journals How Multiple Retrievals Affect Neural Reactivation in Young and Older Adults

2019 ◽  
Vol 74 (7) ◽  
pp. 1086-1100 ◽  
Author(s):  
Marie St-Laurent ◽  
Bradley R Buchsbaum
Keyword(s):  
Older Adults ◽  
Episodic Memory ◽  
Brain Activity ◽  
Activity Patterns ◽  
Age Groups ◽  
Memory Representation ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Transformative Process ◽  
Repeated Retrieval

Abstract Objectives Aging can reduce the specificity with which memory episodes are represented as distributed patterns of brain activity. It remains unclear, however, whether repeated encoding and retrieval of stimuli modulate this decline. Memory repetition is thought to promote semanticization, a transformative process during which episodic memory becomes gradually decontextualized and abstracted. Because semantic memory is considered more resilient to aging than context-rich episodic memory, we hypothesized that repeated retrieval would affect cortical reinstatement differently in young versus older adults. Methods We reanalyzed data from young and older adults undergoing functional magnetic resonance imaging while repeatedly viewing and recalling short videos. We derived trial-unique multivariate measures of similarity between video-specific brain activity patterns elicited at perception and at recall, which we compared between age groups at each repetition. Results With repetition, memory representation became gradually more distinct from perception in young adults, as reinstatement specificity converged downward toward levels observed in the older group. In older adults, alternative representations that were item-specific but orthogonal to patterns elicited at perception became more salient with repetition. Discussion Repetition transformed dominant patterns of memory representation away and orthogonally from perception in young and older adults, respectively. Although distinct, both changes are consistent with repetition-induced semanticization.

Sign in / Sign up

Export Citation Format

Share Document