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Hippocampal ensembles represent sequential relationships among an extended sequence of nonspatial events.
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In: Nature communications, vol 13, iss 1 (2022)
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Abstract:
The hippocampus is critical to the temporal organization of our experiences. Although this fundamental capacity is conserved across modalities and species, its underlying neuronal mechanisms remain unclear. Here we recorded hippocampal activity as rats remembered an extended sequence of nonspatial events unfolding over several seconds, as in daily life episodes in humans. We then developed statistical machine learning methods to analyze the ensemble activity and discovered forms of sequential organization and coding important for order memory judgments. Specifically, we found that hippocampal ensembles provide significant temporal coding throughout nonspatial event sequences, differentiate distinct types of task-critical information sequentially within events, and exhibit theta-associated reactivation of the sequential relationships among events. We also demonstrate that nonspatial event representations are sequentially organized within individual theta cycles and precess across successive cycles. These findings suggest a fundamental function of the hippocampal network is to encode, preserve, and predict the sequential order of experiences.
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Keyword:
2.1 Biological and endogenous factors; Acoustic Stimulation; Animal; Animals; Auditory Perception; Electrodes; Hippocampus; Implanted; Machine Learning; Male; Memory; Mental Health; Models; Nerve Net; Neurosciences; Odorants; Olfactory Perception; Rats; Stereotaxic Techniques; Time Factors
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URL: https://escholarship.org/uc/item/16m8r8hj
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| 2 |
Auditory and visual short-term memory: Influence of material type, contour, and musical expertise
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In: ISSN: 0340-0727 ; EISSN: 1430-2772 ; Psychological Research ; https://hal.archives-ouvertes.fr/hal-03384372 ; Psychological Research, Springer Verlag, In press, ⟨10.1007/s00426-021-01519-0⟩ (2021)
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| 3 |
Vocal learning in songbirds: the role of syllable order in song recognition ...
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Vocal learning in songbirds: the role of syllable order in song recognition. ...
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Vocal learning in songbirds: the role of syllable order in song recognition ...
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Vocal learning in songbirds: the role of syllable order in song recognition ...
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| 7 |
Vocal learning in songbirds: the role of syllable order in song recognition
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| 8 |
Vocal learning in songbirds: the role of syllable order in song recognition.
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Vocal learning in songbirds: the role of syllable order in song recognition
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| 10 |
Vocal learning in songbirds: the role of syllable order in song recognition
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| 11 |
How Long Does It Take for a Voice to Become Familiar? Speech Intelligibility and Voice Recognition Are Differentially Sensitive to Voice Training
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In: Communication Sciences and Disorders Publications (2021)
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| 12 |
The Effects of multilingualism and Music Experience on Tone and Vowel Discrimination Ability
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In: Electronic Thesis and Dissertation Repository (2021)
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| 13 |
Mechanisms of Auditory Short-term Memory during the Perception of Continuous Sounds
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In: Forum Acusticum 2020 ; Forum Acusticum ; https://hal.archives-ouvertes.fr/hal-03242405 ; Forum Acusticum, Dec 2020, Lyon, France. pp.2675-2678, ⟨10.48465/fa.2020.0044⟩ (2020)
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| 14 |
Relationship between sensory memory and speech motor learning
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In: International Seminar on Speech Production ; https://hal.archives-ouvertes.fr/hal-03066082 ; International Seminar on Speech Production, Dec 2020, On line, United States ; https://issp2020.yale.edu/ (2020)
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| 15 |
Contribution of sensory memory to speech motor learning
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In: ISSN: 0022-3077 ; EISSN: 1522-1598 ; Journal of Neurophysiology ; https://hal.archives-ouvertes.fr/hal-02935184 ; Journal of Neurophysiology, American Physiological Society, 2020, 124 (4), pp.1103-1109. ⟨10.1152/jn.00457.2020⟩ (2020)
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| 16 |
Word Meaning Contributes to Free Recall Performance in Supraspan Verbal List-Learning Tests
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In: EISSN: 1664-1078 ; Frontiers in Psychology ; https://hal.archives-ouvertes.fr/hal-02950803 ; Frontiers in Psychology, Frontiers, 2020, 11, ⟨10.3389/fpsyg.2020.02043⟩ (2020)
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| 17 |
The importance of fast auditory processing for central learning mechanisms and related feedback adaptation processes to the auditory periphery ...
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РОЛЬ СЛОВЕСНОЙ ПАМЯТИ В СТАНОВЛЕНИИ ТЕКСТОВОЙ КОМПЕТЕНЦИИ ДОШКОЛЬНИКОВ ... : VERBAL MEMORY IN THE FORMATION OF TEXTUAL COMPETENCE IN PRESCHOOLERS ...
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The Acoustic Dimension of Reading: Does Musical Aptitude Affect Silent Reading Fluency?
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