Left and Right Hemisphere Memory Traces: Their Formation and Fate. Evidence From Events During Memory Formation in the Chick

1997 ◽  
Vol 2 (3-4) ◽  
pp. 179-198 ◽  
Author(s):  
R.J. Andrew
Keyword(s):  
Right Hemisphere ◽  
Memory Formation ◽  
Memory Traces ◽  
Left And Right

scholarly journals Disconnection between Rat’s Left and Right Hemisphere Impairs Short-Term Memory but Not Long-Term Memory

Symmetry ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1872
Author(s):  
Yukitoshi Sakaguchi ◽  
Yoshio Sakurai
Keyword(s):  
Right Hemisphere ◽  
Short Term Memory ◽  
Memory Formation ◽  
Long Term Memory ◽  
Short Term ◽  
Term Memory ◽  
Dynamic Memory ◽  
Left And Right ◽  
Hemispheric Interaction

Split-brain experiments, which have been actively conducted since the twentieth century, have provided a great deal of insight into functional asymmetry and inter-hemispheric interactions. However, how communication between the left and right hemispheres directly contributes to memory formation is still poorly understood. To address this issue, we cut the rat commissural fibers prior to performing behavioral tests, which consisted of two short-term and two long-term memory tasks. The result showed that cutting the commissural fibers impairs short-term memory but not long-term memory. This suggests that the left-right hemispheric interaction through the commissural fibers contributes to the appropriate formation of short-term memory, but not that of long-term memory. Our findings would help to elucidate dynamic memory formation between the two hemispheres and contribute to the development of therapeutics for some neurological diseases which cause a reduction in the inter-hemispheric interaction.

Differentiation Between Left and Right Hemisphere Forms of Intelligence

2006 ◽  
Author(s):  
Cristina Isaacs ◽  
Nichole McWhorter ◽  
Teri McHale ◽  
Lorrie N. Shiota ◽  
Henry V. Soper
Keyword(s):  
Right Hemisphere ◽  
Left And Right

Patterns of Cognitive Test Performance As Functions of the Lateral Localization of Cerebral Abnormalities in the Temporal Lobe

1957 ◽  
Vol 103 (433) ◽  
pp. 758-772 ◽  
Author(s):  
Victor Meyer ◽  
H. Gwynne Jones
Keyword(s):  
Test Performance ◽  
Right Hemisphere ◽  
Cognitive Test ◽  
Temporal Relationships ◽  
Verbal Tasks ◽  
Specific Locus ◽  
Left And Right ◽  
Spatio Temporal ◽  
Cognitive Test Performance ◽  
Lateral Localization

Various investigations into the effects of brain injury on psychological test performance (Weisenburg and McBride, 1935; Patterson and Zangwill, 1944; Anderson, 1951; McFie and Piercy, 1952; Bauer and Becka, 1954; Milner, 1954) suggest the overall conclusion that patients with left hemisphere lesions are relatively poor at verbal tasks, while those with right-sided lesions do worst at practical tasks, particularly the manipulation of spatial or spatio-temporal relationships. Heilbfun's (1956) study confirmed that verbal deficits result from left-sided lesions but his left and right hemisphere groups produced almost identical scores on spatial tests. In so far as these workers paid attention to the specific sites of the lesions, their findings indicate that the pattern of test performance is a function of the hemisphere in which the lesion occurs rather than of its specific locus.

scholarly journals Nested sequences of hippocampal assemblies during behavior support subsequent sleep replay

Science ◽  
2018 ◽  
Vol 362 (6415) ◽  
pp. 675-679 ◽  
Author(s):  
Céline Drieu ◽  
Ralitsa Todorova ◽  
Michaël Zugaro
Keyword(s):  
Neuronal Activity ◽  
Time Scale ◽  
Memory Formation ◽  
Place Cells ◽  
Behavior Support ◽  
Initial Formation ◽  
Memory Traces ◽  
Sequential Memory ◽  
Episodic Memories ◽  
Initial Storage

Consolidation of spatial and episodic memories is thought to rely on replay of neuronal activity sequences during sleep. However, the network dynamics underlying the initial storage of memories during wakefulness have never been tested. Although slow, behavioral time scale sequences have been claimed to sustain sequential memory formation, fast (“theta”) time scale sequences, nested within slow sequences, could be instrumental. We found that in rats traveling passively on a model train, place cells formed behavioral time scale sequences but theta sequences were degraded, resulting in impaired subsequent sleep replay. In contrast, when the rats actively ran on a treadmill while being transported on the train, place cells generated clear theta sequences and accurate trajectory replay during sleep. Our results support the view that nested sequences underlie the initial formation of memory traces subsequently consolidated during sleep.

Symbolic and affective non-verbal deficits in left- and right-hemisphere injured adults

Aphasiology ◽  
1987 ◽  
Vol 1 (3) ◽  
pp. 257-262 ◽  
Author(s):  
Delaina Walker-batson ◽  
Mary M. Barton ◽  
John S. Wendt ◽  
Sharon Reynolds
Keyword(s):  
Right Hemisphere ◽  
Left And Right

Bilateral language organization in congenital right hemiparesis — Different contributions from left and right hemisphere

NeuroImage ◽  
2000 ◽  
Vol 11 (5) ◽  
pp. S136
Author(s):  
M. Staudt ◽  
G. Niemann ◽  
Michael Erb ◽  
Dirk Wildgruber ◽  
I. Kraegeloh-Mann ◽  
...  
Keyword(s):  
Right Hemisphere ◽  
Left And Right

scholarly journals Altered functional connectivity differs in stroke survivors with impaired touch sensation following left and right hemisphere lesions

2018 ◽  
Vol 18 ◽  
pp. 342-355 ◽  
Author(s):  
Peter Goodin ◽  
Gemma Lamp ◽  
Rishma Vidyasagar ◽  
David McArdle ◽  
Rüdiger J. Seitz ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Right Hemisphere ◽  
Stroke Survivors ◽  
Touch Sensation ◽  
Left And Right
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