Polymer-based laminar probes with an ultra-long flexible spiral-shaped cable for in vivo neural recordings Article Swipe
Csaba Horváth
,
Klaudia Csikós
,
Borbála Árkossy
,
Eric Klein
,
Patrick Ruther
,
István Ulbert
,
Richárd Fiáth
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1016/j.snb.2024.136220
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1016/j.snb.2024.136220
Compared to conventional rigid silicon probes, flexible penetrating neural implants exhibit improved mechanical compliance with brain tissue, enabling high-quality neural recordings over extended periods of time. However, the length of the implantable shank and extension cable of most flexible devices falls short of clinical electrodes used in diagnostics and treatment of neurological disorders. In this study, we demonstrate the design, fabrication, and in vivo validation of polyimide-based neural probes with a thin spiral-shaped cable that reaches a length of 27 centimeters, comparable to that of clinical electrodes. The spiral probe comprises a 3.9-mm-long, 75–280-µm-wide and 10-µm-thick implantable shank with 24 linearly placed gold microelectrodes (diameter: 20 µm; electrode pitch: 150 µm) placed either close to the shank edge or centered on the shank. The electrical impedance of the microelectrodes was ∼266 kΩ at 1 kHz measured in vitro. In acute rodent experiments, we recorded high-quality local field potentials (e.g., cortical slow waves and hippocampal gamma activity), single and multiunit activities. In addition, the probes could simultaneously detect the activity of about 10 well-isolated single units, with an average spike amplitude of 65 µV. Furthermore, devices chronically implanted in rats successfully recorded spiking activity over several consecutive days. As demonstrated here, the developed spiral probes can be applied to various tasks, such as the laminar analysis of brain oscillations or the study of the sleep-wake cycle in naturally sleeping animals. In conclusion, our flexible probe design may stimulate the development of novel implantable devices for application in large animal models or clinical settings.
Related Topics
Concepts
Microelectrode
Biomedical engineering
Materials science
Local field potential
Electrode
Spiral (railway)
Multielectrode array
Electrical impedance
Neural activity
Cantilever
In vivo
Fabrication
Chemistry
Composite material
Electrical engineering
Medicine
Biotechnology
Physical chemistry
Biology
Neuroscience
Mathematics
Mathematical analysis
Engineering
Alternative medicine
Pathology
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1016/j.snb.2024.136220
- OA Status
- hybrid
- Cited By
- 7
- References
- 77
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4400194224
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4400194224Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1016/j.snb.2024.136220Digital Object Identifier
- Title
-
Polymer-based laminar probes with an ultra-long flexible spiral-shaped cable for in vivo neural recordingsWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2024Year of publication
- Publication date
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2024-07-01Full publication date if available
- Authors
-
Csaba Horváth, Klaudia Csikós, Borbála Árkossy, Eric Klein, Patrick Ruther, István Ulbert, Richárd FiáthList of authors in order
- Landing page
-
https://doi.org/10.1016/j.snb.2024.136220Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
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hybridOpen access status per OpenAlex
- OA URL
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https://doi.org/10.1016/j.snb.2024.136220Direct OA link when available
- Concepts
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Microelectrode, Biomedical engineering, Materials science, Local field potential, Electrode, Spiral (railway), Multielectrode array, Electrical impedance, Neural activity, Cantilever, In vivo, Fabrication, Chemistry, Composite material, Electrical engineering, Medicine, Biotechnology, Physical chemistry, Biology, Neuroscience, Mathematics, Mathematical analysis, Engineering, Alternative medicine, PathologyTop concepts (fields/topics) attached by OpenAlex
- Cited by
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7Total citation count in OpenAlex
- Citations by year (recent)
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2025: 5, 2024: 1, 2023: 1Per-year citation counts (last 5 years)
- References (count)
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77Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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| abstract_inverted_index.application | 244 |
| abstract_inverted_index.chronically | 185 |
| abstract_inverted_index.conclusion, | 230 |
| abstract_inverted_index.consecutive | 195 |
| abstract_inverted_index.demonstrate | 57 |
| abstract_inverted_index.development | 238 |
| abstract_inverted_index.diagnostics | 47 |
| abstract_inverted_index.electrodes. | 86 |
| abstract_inverted_index.hippocampal | 153 |
| abstract_inverted_index.implantable | 31, 96, 241 |
| abstract_inverted_index.penetrating | 7 |
| abstract_inverted_index.10-µm-thick | 95 |
| abstract_inverted_index.3.9-mm-long, | 92 |
| abstract_inverted_index.Furthermore, | 183 |
| abstract_inverted_index.centimeters, | 80 |
| abstract_inverted_index.conventional | 2 |
| abstract_inverted_index.demonstrated | 198 |
| abstract_inverted_index.experiments, | 141 |
| abstract_inverted_index.fabrication, | 60 |
| abstract_inverted_index.high-quality | 18, 144 |
| abstract_inverted_index.neurological | 51 |
| abstract_inverted_index.oscillations | 217 |
| abstract_inverted_index.successfully | 189 |
| abstract_inverted_index.spiral-shaped | 72 |
| abstract_inverted_index.well-isolated | 172 |
| abstract_inverted_index.simultaneously | 165 |
| abstract_inverted_index.microelectrodes | 103, 128 |
| abstract_inverted_index.polyimide-based | 66 |
| abstract_inverted_index.75–280-µm-wide | 93 |
| cited_by_percentile_year.max | 98 |
| cited_by_percentile_year.min | 89 |
| corresponding_author_ids | https://openalex.org/A5072499791 |
| countries_distinct_count | 2 |
| institutions_distinct_count | 7 |
| corresponding_institution_ids | https://openalex.org/I31882830, https://openalex.org/I4210138738, https://openalex.org/I80251312 |
| sustainable_development_goals[0].id | https://metadata.un.org/sdg/7 |
| sustainable_development_goals[0].score | 0.6299999952316284 |
| sustainable_development_goals[0].display_name | Affordable and clean energy |
| citation_normalized_percentile.value | 0.87499425 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | True |