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Showing 1 to 15 of 1,396 results Save | Export
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Pool, Eva R.; Gera, Rani; Fransen, Aniek; Perez, Omar D.; Cremer, Anna; Aleksic, Mladena; Tanwisuth, Sandy; Quail, Stephanie; Ceceli, Ahmet O.; Manfredi, Dylan A.; Nave, Gideon; Tricomi, Elizabeth; Balleine, Bernard; Schonberg, Tom; Schwabe, Lars; O'Doherty, John P. – Learning & Memory, 2022
It has been suggested that there are two distinct and parallel mechanisms for controlling instrumental behavior in mammals: goal-directed actions and habits. To gain an understanding of how these two systems interact to control behavior, it is essential to characterize the mechanisms by which the balance between these systems is influenced by…
Descriptors: Habit Formation, Training, Goal Orientation, Stress Variables
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Jordan, Jake T.; Tong, Yi; Pytte, Carolyn L. – Learning & Memory, 2022
Plasticity is a neural phenomenon in which experience induces long-lasting changes to neuronal circuits and is at the center of most neurobiological theories of learning and memory. However, too much plasticity is maladaptive and must be balanced with substrate stability. Area CA3 of the hippocampus provides such a balance via hemispheric…
Descriptors: Spatial Ability, Brain Hemisphere Functions, Memory, Learning Processes
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Gonzalez, Maria Carolina; Radiske, Andressa; Conde-Ocazionez, Sergio; Rossato, Janine I.; Bevilaqua, Lia R. M.; Cammarota, Martín – Learning & Memory, 2022
Hippocampal dopamine D1/D5 receptor-dependent destabilization is necessary for object recognition memory (ORM) updating through reconsolidation. Dopamine also regulates hippocampal theta and gamma oscillations, which are involved in novelty and memory processing. We found that, in adult male rats, ORM recall in the presence of a novel object, but…
Descriptors: Recall (Psychology), Brain Hemisphere Functions, Biochemistry, Neurological Impairments
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Szollosi, Ágnes; Kéri, Szabolcs; Racsmány, Mihály – Learning & Memory, 2022
Some previous studies have shown that increased stress hormone levels have beneficial effects on memory encoding; however, there is no clear consensus on which encoding-related processes are affected by stress hormones. In the present study, we investigated the relationship between interindividual differences in neuroendocrine response to acute…
Descriptors: Memory, Cognitive Processes, Stress Variables, Recognition (Psychology)
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Nagayoshi, Taikai; Ishikawa, Rie; Kida, Satoshi – Learning & Memory, 2022
Fear generalization is one of the main symptoms of posttraumatic stress disorder. In rodents, the anterior cingulate cortex (ACC) and the hippocampus (HPC) control the expression of contextual fear memory generalization. Consistently, ACC projections to the ventral HPC contribute to contextual fear generalization. However, the roles of ACC…
Descriptors: Brain Hemisphere Functions, Fear, Generalization, Animals
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Shields, Grant S.; Hunter, Colton L.; Yonelinas, Andrew P. – Learning & Memory, 2022
The effects of acute stress on memory encoding are complex. Recent work has suggested that both the delay between stress and encoding and the relevance of the information learned to the stressor may modulate the effects of stress on memory encoding, but the relative contribution of each of these two factors is unclear. Therefore, in the present…
Descriptors: Stress Variables, Memory, Cognitive Processes, Time
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Miller, Dylan B.; Rassaby, Madeleine M.; Collins, Katherine A.; Milad, Mohammad R. – Learning & Memory, 2022
Fear is an adaptive emotion that serves to protect an organism against potential dangers. It is often studied using classical conditioning paradigms where a conditioned stimulus is paired with an aversive unconditioned stimulus to induce a threat response. Less commonly studied is a phenomenon that is related to this form of conditioning, known as…
Descriptors: Inhibition, Conditioning, Cues, Stimuli
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Creighton, Samantha D.; Jardine, Kristen H.; Desimone, Alexa; Zmetana, Megan; Castellano, Sabrina; Milite, Ciro; Sbardella, Gianluca; Winters, Boyer D. – Learning & Memory, 2022
Histone acetylation, catalyzed by e, has emerged as a promising therapeutic strategy in Alzheimer's disease (AD). By longitudinally characterizing spatial memory at 3, 6, and 9 mo of age, we show that acute activation and inhibition of the histone acetyltransferase PCAF remediated memory impairments in 3xTG-AD mice in an age-related bidirectional…
Descriptors: Alzheimers Disease, Animals, Research, Spatial Ability
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Oberländer, Kristin; Witte, Victoria; Mallien, Anne Stephanie; Gass, Peter; Bengtson, C. Peter; Bading, Hilmar – Learning & Memory, 2022
Differences in the learning associated transcriptional profiles between mouse strains with distinct learning abilities could provide insight into the molecular basis of learning and memory. The inbred mouse strain DBA/2 shows deficits in hippocampus-dependent memory, yet the transcriptional responses to learning and the underlying mechanisms of…
Descriptors: Learning, Memory, Animals, Research
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Shultz, Brianna; Farkash, Abigail; Collins, Bailey; Mohammadmirzaei, Negin; Knox, Dayan – Learning & Memory, 2022
NMDA receptors (NMDARs) and AMPA receptors (AMPARs) in amygdala nuclei and the dorsal hippocampus (dHipp) are critical for fear conditioning. Enhancements in synaptic AMPAR expression in amygdala nuclei and the dHipp are critical for fear conditioning, with some studies observing changes in AMPAR expression across many neurons in these brain…
Descriptors: Fear, Brain, Physiology, Change
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Korman, Maria; Gal, Carmit; Gabitov, Ella; Karni, Avi – Learning & Memory, 2021
How does the time of day of a practice session affect learning of a new motor sequence in the elderly? Participants practiced a given finger tapping sequence either during morning or evening hours. All participants robustly improved performance speed within the session concurrent with a reorganization of the tapping pattern of the sequence.…
Descriptors: Time, Psychomotor Skills, Older Adults, Performance
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Lapointe, Thomas; Wolter, Michael; Leri, Francesco – Learning & Memory, 2021
Conditioned stimuli (CS) have multiple psychological functions that can potentially contribute to their effect on memory formation. It is generally believed that CS-induced memory modulation is primarily due to conditioned emotional responses, however, well-learned CSs not only generate the appropriate behavioral and physiological reactions…
Descriptors: Memory, Stimuli, Animals, Emotional Response
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Fujiwara, Esther; Madan, Christopher R.; Caplan, Jeremy B.; Sommer, Tobias – Learning & Memory, 2021
The brain processes underlying impairing effects of emotional arousal on associative memory were previously attributed to two dissociable routes using high-resolution fMRI of the MTL (Madan et al. 2017). Extrahippocampal MTL regions supporting associative encoding of neutral pairs suggested unitization; conversely, associative encoding of negative…
Descriptors: Emotional Response, Arousal Patterns, Neurological Impairments, Paired Associate Learning
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Quintanilla, Julian; Cox, Brittney M.; Gall, Christine M.; Mahler, Stephen V.; Lynch, Gary – Learning & Memory, 2021
Evidence suggests encoding of recent episodic experiences may be enhanced by a subsequent salient event. We tested this hypothesis by giving rats a 3-min unsupervised experience with four odors and measuring retention after different delays. Animals recognized that a novel element had been introduced to the odor set at 24 but not 48 h. However,…
Descriptors: Evidence, Memory, Animals, Olfactory Perception
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Bader, Farah; Wiener, Martin – Learning & Memory, 2021
Behavioral and electrophysiology studies have shown that humans possess a certain self-awareness of their individual timing ability. However, conflicting reports raise concerns about whether humans can discern the direction of their timing error, calling into question the extent of this timing awareness. To understand the depth of this ability,…
Descriptors: Feedback (Response), Metacognition, Time, Error Patterns
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