Back to Search
Start Over
Dissociation of Recognition and Recency Memory Judgments After Anterior Thalamic Nuclei Lesions in Rats
- Source :
- Behavioral Neuroscience
- Publication Year :
- 2013
- Publisher :
- American Psychological Association, 2013.
-
Abstract
- The anterior thalamic nuclei form part of a network for episodic memory in humans. The importance of these nuclei for recognition and recency judgments remains, however, unclear. Rats with anterior thalamic nuclei lesions and their controls were tested on object recognition, along with two types of recency judgment. The spontaneous discrimination of a novel object or a novel odor from a familiar counterpart (recognition memory) was not affected by anterior thalamic lesions when tested after retention delays of 1 and 60 min. To measure recency memory, rats were shown two familiar objects, one of which had been explored more recently. In one condition, rats were presented with two lists (List A, List B) of objects separated by a delay, thereby creating two distinct blocks of stimuli. After an additional delay, rats were presented with pairs of objects, one from List A and one from List B (between-block recency). No lesion-induced deficit was apparent for recency discriminations between objects from different lists, despite using three different levels of task difficulty. In contrast, rats with anterior thalamic lesions were significantly impaired when presented with a continuous list of objects and then tested on their ability to distinguish between those items early and late in the same list (within-block recency). The contrasting effects on recognition and recency support the notion that interlinked hippocampal–anterior thalamic interconnections support aspects of both spatial and nonspatial learning, although the role of the anterior thalamic nuclei may be restricted to a subclass of recency judgments (within-block).
- Subjects :
- Male
Dissociation (neuropsychology)
Time Factors
Motor Activity
memory
03 medical and health sciences
Behavioral Neuroscience
Judgment
0302 clinical medicine
recency
Discrimination, Psychological
Reaction Time
Animals
0501 psychology and cognitive sciences
050102 behavioral science & comparative psychology
10. No inequality
Maze Learning
Episodic memory
Recognition memory
Analysis of Variance
Phosphopyruvate hydratase
05 social sciences
Novel object
Anterior thalamic nuclei
Cognitive neuroscience of visual object recognition
Retention, Psychology
Recognition, Psychology
Articles
anterior thalamic nuclei
Rats
Phosphopyruvate Hydratase
Space Perception
Odorants
Conditioning, Operant
recognition
Psychology
proactive interference
Neuroscience
030217 neurology & neurosurgery
Photic Stimulation
Cognitive psychology
Thalamic lesions
Subjects
Details
- Language :
- English
- ISSN :
- 19390084 and 07357044
- Volume :
- 127
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Behavioral Neuroscience
- Accession number :
- edsair.doi.dedup.....3852019c2ec0dbab45a1b2e36db92146