Inner Segment Recording
Inner Segment Recording - Related Videos
02:50
Recording of Mesenteric Afferent Nerve Activity in an Ex Vivo Mouse Jejunum Segment
0 Views •
2025
This video shows the process of recording electrical signals from mesenteric afferent nerves in a dissected mouse jejunal segment to study the effects of tissue pressure and movement changes on afferent nerve activity.
10:32
In Vitro Recording of Mesenteric Afferent Nerve Activity in Mouse Jejunal and Colonic Segments
0 Views •
Cited by 8 •
2016
Mesenteric afferent nerves convey information from the gastrointestinal tract towards the brain regarding normal homeostasis as well as pathophysiology. Gastrointestinal afferent nerve activity can be assessed by mounting isolated intestinal segments with attached afferent nerves into an organ bath, isolating the nerve, and assessing basal as well as stimulated activity.
11:38
Volume Segmentation and Analysis of Biological Materials Using SuRVoS (Super-region Volume Segmentation) Workbench
0 Views •
Cited by 10 •
2017
Segmentation of three-dimensional data from many imaging techniques is a major bottleneck in analysis of complex biological systems. Here, we describe the use of SuRVoS Workbench to semi-automatically segment volumetric data at various length-scales using example datasets from cryo-electron tomography, cryo soft X-ray tomography, and phase contrast X-ray tomography techniques.
03:24
Anterior Eye Segment Dissection: A Method to Isolate Cornea Bearing Anterior Segment from Porcine Eye
0 Views •
2025
In this video, we demonstrate the dissection of the cornea-bearing anterior segment of the porcine eye. The isolated segment can be used for organ culturing to study the pathophysiology of eye disorders.
03:57
Anterior Eye Segment Culturing: A Method to Culture Cornea Bearing Anterior Segment of Porcine Eye
0 Views •
2025
In this video, we demonstrate the culturing method of a cornea-bearing anterior eye segment from a porcine eye. This culture system serves as an experimental model to study eye injuries.
FAQs
The two measurements answer different physiological questions. Tracking membrane voltage shows how the inner segment’s electrical state changes, whereas measuring ionic current indicates charge movement associated with membrane conductances. Researchers can therefore examine either the voltage response itself or the current underlying it, helping connect sensory stimulation with ion-channel behavior and downstream signal-transduction events.
A high-resistance seal allows the recording micropipette to interact electrically with the cell membrane in a controlled way. This connection supports either control of membrane voltage or monitoring of ionic current while the sensory cell receives stimulation. As a result, investigators can relate electrical changes more directly to membrane conductances and signaling processes rather than simply observing a general cellular response.
Ion channels and membrane conductances provide the electrical basis for the recorded signal. When sensory stimulation activates signal-transduction pathways, changes in channel activity can alter ionic currents and membrane voltage. Inner segment measurements make these changes accessible for studying how photoreceptors convert inputs into electrical signals and for identifying alterations associated with cellular dysfunction.
Applying light or another defined stimulus gives the cell an input that can be compared with its measured voltage or ionic-current response. The resulting electrical pattern helps researchers evaluate how sensory information passes through signal-transduction pathways. This approach is especially relevant for determining how photoreceptor physiology links an external stimulus to changes in membrane behavior.
A typical workflow begins by positioning a recording micropipette at the sensory cell’s inner segment and forming a high-resistance seal with the membrane. The experimenter then controls membrane voltage or monitors ionic current while presenting light or another stimulus. Recorded electrical changes are interpreted in relation to ion-channel activity, membrane conductances, and cellular signaling.
Researchers apply inner segment measurements to investigate photoreceptor physiology, retinal circuitry, and genetic disease mechanisms. The approach also supports testing how drugs or environmental conditions affect cellular signaling. Because it provides electrical readouts linked to membrane conductances and signal-transduction pathways, the technique can connect changes at the cell membrane with broader biological effects in sensory systems.