Neuronal Responses to Conspecifics in the Ventral CA1

Rao, Rajnish P.; von Heimendahl, Moritz; Bahr, Viktor; Brecht, Michael

doi:10.1016/j.celrep.2019.05.081

Cited by 85Memory and Neural MechanismsNeuroscience and Neuropharmacology ResearchNeuroendocrine regulation and behavior

Neuronal Responses to Conspecifics in the Ventral CA1

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Rao, Rajnish P., von Heimendahl, Moritz, Bahr, Viktor, Brecht, Michael·2019·Cell Reports

DOI 10.1016/j.celrep.2019.05.081

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Abstract

Conspecific recognition and discrimination is a vital aspect of social interactions. Genetic manipulations have implicated the CA2 sub-field and ventral hippocampus in rodent social memory. However, little is known about the nature of hippocampal responses to social signals. We characterized ventral CA1 responses in rats while interacting with conspecifics across a gap. Many cells showed unusual "social presence responses," i.e., large elevations of firing rates, which were contingent on the presence of a conspecific. Sharp-wave ripple activity was also increased by conspecific presence. The cells were modulated by facial touch and ultrasonic vocalizations. In male rats, female conspecifics evoked stronger responses than males. In addition, responses to females differed more strongly between individual females than between males. Cells showed little response to object presence. Ventral CA1 responses were also markedly different from those of dorsal CA1, where most cells were weakly inhibited by conspecific presence.

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Numerous exploratory behaviors linked to episodic learning occur in stationary animals, such as interactions with objects or conspecifics, rearing, and head-scanning behavior.
“Numerous exploratory behaviors linked to episodic learning occur in stationary animals (i.e., at a fixed spatial location), such as interactions with objects or conspecifics, rearing, and head-scanning behavior10–12.”
From Place and behavioral modulation of hippocampal neurons during immobility (2026) · cites this paper as [12]

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Authors: Rao, R. P., von Heimendahl, M., Bahr, V., & Brecht, M.
Affiliations: Humboldt-Universität zu Berlin (DE)
Corresponding author: Rao, Rajnish P.
Brecht, Michael
ORCID: Rao, Rajnish P.
Brecht, Michael
Venue: Cell Reports
Publisher: Elsevier BV
Published: 2019-06
Volume: 27
Issue: 12
Pages: 3460-3472.e3
ISSN: 2211-1247 (ISSN-L)
DOI: 10.1016/j.celrep.2019.05.081
OpenAlex: W2950450891
Cited by: 85
References: 90
Citations by year: 2026: 11 · 2025: 10 · 2024: 18 · 2023: 13 · 2022: 13 · 2021: 13 · 2020: 5 · 2019: 2
FWCI: 4.79
Type: journal article
Language: en
Open access: gold
doi.org
Licence: cc-by-nc-nd
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
www.elsevier.com/legal/tdmrep-license (tdm)
creativecommons.org/licenses/by-nc-nd/4.0/ (vor)
Locations: Cell Reports (publishedVersion, cc-by-nc-nd)
PubMed (publishedVersion)
DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders: Bundesministerium für Bildung und Forschung (01GQ1001A, SFB 1315/1)
Humboldt-Universität zu Berlin
Topics: Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords: ventral hippocampus, CA1, social recognition, conspecifics, social memory, sharp-wave ripples, neuronal firing rate, ultrasonic vocalizations, sex differences, dorsal CA1
MeSH terms: Acoustic Stimulation, Animals, Conditioning, Classical, Discrimination, Psychological, Female, Interpersonal Relations, Male, Memory, Neurons, Species Specificity, Touch, Vocalization, Animal, Recognition, Psychology, Rats, CA1 Region, Hippocampal

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Neuronal Responses to Conspecifics in the Ventral CA1

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