Research data · Brain technique

In vivo electrophysiology

From 2021 to 2025, 335 animal research papers mentioned in vivo electrophysiology and at least one behavioral test.

That is 1.9 times the 173 papers of 2011 to 2015. Between the same two periods, all the animal research papers that mention any of the 90 tests we count grew more slowly, to 1.2 times as many.

335 animal research papers from 2021 to 2025 mentioned in vivo electrophysiology and a test
1.9 times as many papers as in 2011 to 2015
12% of these papers mention fear conditioning
17% of the 1,955 animal research papers from 2021 to 2025 that mention in vivo electrophysiology also mention a test

The tests mentioned with in vivo electrophysiology

Each bar is one test, with how many of the 335 papers from 2021 to 2025 mention it, and what share that is. A paper that mentions two tests counts under both.

The 15 tests these papers mention most

40 papers 12%
33 papers 10%
25 papers 7%
24 papers 7%
21 papers 6%
17 papers 5%
15 papers 4%
15 papers 4%
12 papers 4%
All 58 tests these papers mention
Papers from 2021 to 2025 that mention in vivo electrophysiology and each test
TestPapersShare of the 335 papers
Fear conditioning4012%
Novel object recognition3611%
Open field3310%
Elevated plus maze257%
Operant conditioning247%
Y-maze247%
Morris water maze216%
Conditioned place preference185%
Forced swim test175%
Self-administration154%
Treadmill running154%
T-maze154%
Von Frey test124%
Object location test113%
Tail suspension test103%
Three-chamber sociability test93%
Social interaction test93%
Sucrose preference test82%
Rotarod82%
Prepulse inhibition and acoustic startle82%
Barnes maze82%
Light-dark box62%
Novelty-suppressed feeding62%
Wheel running62%
Touchscreen operant tasks51%
Passive avoidance51%
Skilled reaching41%
Formalin test41%
Catalepsy bar test41%
Elevated zero maze41%
Olfactory tests41%
Gait analysis41%
Learned helplessness31%
Grip strength31%
Grid walking (foot fault)31%
Predator odor exposure31%
Resident-intruder test31%
Marble burying31%
Cylinder test31%
Nest building31%
Five-choice serial reaction time task21%
Acetone test21%
Rotational behavior (rotometer)21%
Attentional set shifting21%
Social approach and avoidance21%
Looming stimulus21%
Tube test for social dominance21%
Real-time place preference21%
Self-grooming21%
Runway1under 1%
Active avoidance (shuttle box)1under 1%
Radial arm water maze1under 1%
Step-down avoidance1under 1%
Radial arm maze1under 1%
Ladder rung walking1under 1%
Hargreaves plantar test1under 1%
Plus maze for place and response learning1under 1%
Hot plate1under 1%

Tests named in 30 or more of these papers link to a page on that test with in vivo electrophysiology. To count the papers that mention two or more tests together, use the test battery tool.

Papers by year

Animal research papers that mention in vivo electrophysiology and a behavioral test, by year, 2001 to 2026

The 2026 bar counts papers added to PubMed by November 8, 2026.

  • Papers in a full year
  • 2026 so far
Show the counts for each year
Papers by year
YearPapers
20017
200211
200310
20047
200519
200614
200718
20087
200928
201029
201131
201224
201329
201439
201550
201641
201756
201837
201958
202051
202167
202252
202370
202464
202582
2026 (part year)68

Papers that mention in vivo electrophysiology and a test fell from 67 in 2021 to 52 in 2022, then rose to 82 in 2025. Part of this dip may come from PubMed's indexing rather than from fewer studies. We take a paper's species from PubMed's indexing when the indexing names one. Otherwise PubTator 3, NCBI's text-mining service, has to find a species in the title or abstract, or the paper is not counted. Papers that PubMed indexed under the subject heading Animals also fell and rose, from 200,221 in 2021 to 156,447 in 2023 and 235,479 in 2025.

Disease models in papers that mention in vivo electrophysiology

Each bar is one disease model, with how many of the 335 papers from 2021 to 2025 are tagged with it, and what share that is. The model comes from the paper's MeSH terms, the subject headings the National Library of Medicine adds when it indexes a paper. A paper without MeSH terms gets its model from PubTator 3, NCBI's text-mining service, if PubTator 3 finds the disease in the title or abstract. A paper can count under more than one model.

Papers from 2021 to 2025 by disease model

29 papers 9%
21 papers 6%
19 papers 6%
18 papers 5%
16 papers 5%
10 papers 3%

Which species the papers used

Each bar is a share of the 335 papers from 2021 to 2025. A paper can use more than one species, so the shares can add to more than 100%.

Species

Rat
185 papers 55%
Mouse
143 papers 43%
Other animals
10 papers 3%
Nonhuman primate
3 papers 1%

“Other animals” counts papers that use none of the species this chart names.

NIH funding

76 of the 335 papers (23%) had NIH funding. NIMH, the National Institute of Mental Health, funded the most, 30 of them. A paper counts as NIH-funded when its PubMed record lists an NIH grant, or when NIH RePORTER links it to an NIH project.

NIH-funded papers by institute

NIMHNational Institute of Mental Health
30 papers 39%
NINDSNational Institute of Neurological Disorders and Stroke
24 papers 32%
NIDA
22 papers 29%
NIANational Institute on Aging
12 papers 16%
NIAAANational Institute on Alcohol Abuse and Alcoholism
5 papers 7%
NIGMSNational Institute of General Medical Sciences
4 papers 5%

Each share is of the NIH-funded papers. A paper with grants from two institutes counts under both.

The most cited papers from 2021 to 2025

These papers from 2021 to 2025 mention in vivo electrophysiology and a behavioral test and have the most citations, as counted by NIH's iCite on November 5, 2026.

  1. HMGB1 mediates synaptic loss and cognitive impairment in an animal model of sepsis-associated encephalopathy.

    J Neuroinflammation, 2023. 119 citations.

  2. Acetylcholine deficiency disrupts extratelencephalic projection neurons in the prefrontal cortex in a mouse model of Alzheimer's disease.

    Nat Commun, 2022. 77 citations.

  3. Transcranial Direct Current Stimulation Enhances Neuroplasticity and Accelerates Motor Recovery in a Stroke Mouse Model.

    Stroke, 2022. 71 citations.

  4. Central amygdala micro-circuits mediate fear extinction.

    Nat Commun, 2021. 65 citations.

  5. Convergent Coding of Recent and Remote Fear Memory in the Basolateral Amygdala.

    Biol Psychiatry, 2022. 45 citations.

How we counted

A paper counts here when it is animal research and its title or abstract mentions in vivo electrophysiology and at least one of the 90 behavioral tests. A count is a number of papers, not of experiments, labs or animals. A paper that mentions in vivo electrophysiology only in its methods is missed, so the count runs low.

A paper is animal research when its MeSH terms name an animal species. If they name none, NCBI's text-mining service PubTator 3 has to find one in the title or abstract. Papers on animals other than mice, rats, zebrafish, flies and primates count only when they also mention a test. Many of them study people or use the same words for something else.

The search terms for in vivo electrophysiology are in the download Animal models and brain techniques. The counts in the chart of tests are in Tests mentioned with each model or technique. The full method, with each source and its terms of use, is on our main page, Behavioral tests in published research.

More brain techniques

Each brain technique with 100 or more papers from 2021 to 2025 that mention a test has a page. These are the others, each with that count.

How to cite

APA

ConductScience. (2026, November 13). Behavioral tests with in vivo electrophysiology [Data set]. https://conductscience.com/resources/data/brain-techniques/in-vivo-electrophysiology

BibTeX

@misc{conductscience_in_vivo_electrophysiology_2026,
  author = {{ConductScience}},
  title = {Behavioral tests with in vivo electrophysiology},
  year = {2026},
  month = nov,
  url = {https://conductscience.com/resources/data/brain-techniques/in-vivo-electrophysiology},
  note = {Data set, released November 13, 2026},
}

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