Bipolar Neurons

Bipolar neurons are specialized nerve cells with two distinct processes, a single dendrite and a single axon, that support directional communication between sensory receptors and the central nervous system. Their dendrite receives signals or transduces external stimuli, while the axon conducts action potentials toward downstream neurons, preserving the ordered flow of sensory information. In biology, bipolar neurons are prominent in the retina, where they relay signals from photoreceptors to ganglion cells, and in sensory pathways for smell, hearing, and balance. Studying their organization helps researchers understand sensory processing, neural circuitry, and how disruptions in specialized pathways can affect perception and coordinated responses.

Bipolar Neurons - Related Videos

Research

JoVE Journal - Biology

Imaging Exocytosis in Retinal Bipolar Cells with TIRF Microscopy

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Cited by 18 •

2009

In this video, we demonstrate how to label and visualize single synaptic vesicle exocytosis and trafficking in goldfish retinal bipolar cells using total internal reflectance fluorescence (TIRF) microscopy.

Education

JoVE Core - Introduction to Psychology

Bipolar Disorder

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2025

Bipolar disorder is a chronic mental health condition marked by significant mood fluctuations, including episodes of mania and depression. Elevated energy levels, heightened mood or irritability, impulsive behavior, reduced sleep needs, rapid speech, racing thoughts, inflated self-esteem, and distractibility characterize mania. Individuals with bipolar disorder often alternate between depressive and manic states, with periods of emotional stability lasting an average of six months to a year.

Bipolar Junction Transistor

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2024

Bipolar Junction Transistors (BJTs) are essential elements in electronic circuits, playing a crucial role in the functionality of amplifiers, memories, and microprocessors. These transistors can be designed as NPN or PNP based on their doping patterns. They consist of three layers: the emitter, base, and collector. The configuration of these layers and their respective doping levels—with N-type or P-type impurities—define the transistor's type and its operational characteristics. The structure...

Research

JoVE Journal - Behavior
Free Sample

Developing a Rat Model for Bipolar Disorder

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Cited by 1 •

2025

This article presents a protocol for the induction of a unique rat model of bipolar disorder that captures both mania-like and depressive-like behavior.

External Excitation of One-Dimensional Patterned Neuronal Cultures

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2025

This video demonstrates a technique for stimulating line-patterned neuronal cultures with a uniform, unidirectional electric field.

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