Neurobiology of Learning and Memory This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Effect of positive social comparative feedback on the resting state connectivity of dopaminergic neural pathways: A preliminary investigation
Neurobiol Learn Mem. 2024 Apr 29:107930. doi: 10.1016/j.nlm.2024.107930. Online ahead of print.ABSTRACTPositive social comparative feedback is hypothesized to generate a dopamine response in the brain, similar to reward, by enhancing expectancies to support motor skill learning. However, no studies have utilized neuroimaging to examine this hypothesized dopaminergic mechanism. Therefore, the aim of this preliminary study was to investigate the effect of positive social comparative feedback on dopaminergic neural pathways measured by resting state connectivity. Thirty individuals practiced an implicit, motor sequence learni...
Source: Neurobiology of Learning and Memory - May 1, 2024 Category: Neurology Authors: Allison F Lewis Rachel Bohnenkamp Makenzie Myers Dirk B den Ouden Stacy L Fritz Jill Campbell Stewart Source Type: research

Optogenetic stimulation of medial septal glutamatergic neurons modulates theta-gamma coupling in the hippocampus
Neurobiol Learn Mem. 2024 Apr 27;211:107929. doi: 10.1016/j.nlm.2024.107929. Online ahead of print.ABSTRACTHippocampal cross-frequency theta-gamma coupling (TGC) is a basic mechanism for information processing, retrieval, and consolidation of long-term and working memory. While the role of entorhinal afferents in the modulation of hippocampal TGC is widely accepted, the influence of other main input to the hippocampus, from the medial septal area (MSA, the pacemaker of the hippocampal theta rhythm) is poorly understood. Optogenetics allows us to explore how different neuronal populations of septohippocampal circuits contro...
Source: Neurobiology of Learning and Memory - April 30, 2024 Category: Neurology Authors: Elena Dmitrieva Anton Malkov Source Type: research

Optogenetic stimulation of medial septal glutamatergic neurons modulates theta-gamma coupling in the hippocampus
Neurobiol Learn Mem. 2024 Apr 27:107929. doi: 10.1016/j.nlm.2024.107929. Online ahead of print.ABSTRACTHippocampal cross-frequency theta-gamma coupling (TGC) is a basic mechanism for information processing, retrieval, and consolidation of long-term and working memory. While the role of entorhinal afferents in the modulation of hippocampal TGC is widely accepted, the influence of other main input to the hippocampus, from the medial septal area (MSA, the pacemaker of the hippocampal theta rhythm) is poorly understood. Optogenetics allows us to explore how different neuronal populations of septohippocampal circuits control ne...
Source: Neurobiology of Learning and Memory - April 30, 2024 Category: Neurology Authors: Elena Dmitrieva Anton Malkov Source Type: research

No evidence that arousal affects reactivated memories
Neurobiol Learn Mem. 2024 Apr 12:107928. doi: 10.1016/j.nlm.2024.107928. Online ahead of print.ABSTRACTMemory for inherently neutral elements of emotional events is often enhanced on delayed tests - an effect that has been attributed to noradrenergic arousal. Reactivation of a memory is thought to return its corresponding neural ensemble to a state that is similar to when it was originally experienced. Therefore, we hypothesized that neutral elements of memories, too, can be enhanced through reactivation concurrent with heightened arousal. Participants (n = 94) visited the lab for three sessions. During the first session, ...
Source: Neurobiology of Learning and Memory - April 14, 2024 Category: Neurology Authors: Olivier T de Vries Sascha B Duken Merel Kindt Vanessa A van Ast Source Type: research

Perceived stress and renewal: The effects of long-term stress on the renewal effect
Neurobiol Learn Mem. 2024 Apr 4;211:107927. doi: 10.1016/j.nlm.2024.107927. Online ahead of print.ABSTRACTTwo online experiments evaluated the relationship between long-term stress, as measured with the Perceived Stress Scale-10, and the Renewal Effect. In the first experiment renewal was assessed with a behavioral suppression task in a science-fiction based video game. Participants learned to suppress mouse clicking during a signal for an upcoming attack to avoid losing points. The signal was first paired with an attack in Context A and extinguished in Context B and tested back in Context A. The contexts were different sp...
Source: Neurobiology of Learning and Memory - April 6, 2024 Category: Neurology Authors: Borja Nevado James Byron Nelson Source Type: research

Perceived stress and renewal: The effects of long-term stress on the renewal effect
Neurobiol Learn Mem. 2024 Apr 4:107927. doi: 10.1016/j.nlm.2024.107927. Online ahead of print.ABSTRACTTwo online experiments evaluated the relationship between long-term stress, as measured with the Perceived Stress Scale-10, and the Renewal Effect. In the first experiment renewal was assessed with a behavioral suppression task in a science-fiction based video game. Participants learned to suppress mouse clicking during a signal for an upcoming attack to avoid losing points. The signal was first paired with an attack in Context A and extinguished in Context B and tested back in Context A. The contexts were different space ...
Source: Neurobiology of Learning and Memory - April 6, 2024 Category: Neurology Authors: Borja Nevado James Byron Nelson Source Type: research