In this episode, I go into detail about how On Center, Off surround Ganglion cells respond to light that stimulates rods and cones in the center and the surround of the ganglion cell's receptive fields.

Is it safe to eat tuna? We talk with Michael Morrissey Ph.D, formerly with the Oregon State University Seafood Lab in Astoria, Oregon, and the lead author of a 2005 study that examined mercury levels in West Coast albacore tuna. As we...

In this lecture, I discuss the endocrine system and how endocrine glands control functions in the body through the release of hormones. The pituitary gland is known as the Master Endocrine Gland and plays a major role in controlling the...

In this episode, I talk about receptive field of ganglion cells, showing how rods and cones are connected to bipolar cells that are then connected to Ganglion cells. The more bipolar cells you have connected to Ganglion cells, the larger...

After Depolarization and Repolarization comes Hyperpolarization, where the membrane potential falls beneath the Resting Membrane Potential. Watch the video to learn more!

When the action potential reaches the axon terminal, this triggers a series of events that result in the release of neurotransmitter to the synaptic cleft. Neurotransmitters bind to the receptors on the postsynaptic membrane causing a...

In this video, I talk about what agonists and antagonists are and how they affect the neuron on the level of the neurotransmitter. Enjoy

In this video, I talk about the medulla, pons and midbrain, the 3 parts of the brain stem and take a bried look at their functions.

In this episode, I give a general overview of how senses work. I use the example of vision to illustrate a process that applies to all senses. Enjoy!

In this episode, I give an introduction to how eyes work. Why do you see what you see? What is the mechanism involved in that process? Watch the video and see :)

In this episode, I go through the process of how rods and cones respond to light. I use Rods as an example and show how Rhodopsin, Transducin and Phosphodiesterase are involved in the process. Enjoy

In this video, I show how Sound is accurately transferred to the inner ear. Since there is fluid inside the cochlea, impedance matching needs to take place. It happens due to the 1.3 to 1 ratio of movement between the maleus, incus and...

In this video, I talk about how the brain processes information on the different pitches that we hear. I'm warning you - it starts off a little scary, but by the end of the video, you will have a good idea of how we hear different...

In this video, I talk about the organ of corti, which is found on top of the basiliar membrane inside the cochlea. When the basilar membrane vibrates up and down, that causes the organ of Corti to move up and down, and the tectorial...

In this video, I show the details of how the bending of the stereocilia on the inner hair cells results in the release of neurotransmitters, which ultimately results in hearing. Enjoy.

In this video, I go into more detail on the anatomy of the frontal lobe, and the functions of the various regions in the frontal lobe. I define gyri and sulci, and even show a video of someone with Broca's aphasia, which shows how damage...

What does it take for an action potential to take place? What are depolarization, repolarization, and hyperpolarization? How are voltage-gated ion channels involved? In this video, you will get answers to all these questions.

In this episode, I talk about the divisions of the nervous system and deal with terms like the Central and Peripheral Nervous Systems, Brain and Spinal Cord, Somatic and Autonomic Nervous System, Sympathetic and Parasympathetic Nervous...

In this video, Leslie Samuel talks about the regions within the parietal lobe and how they function. The parietal lobe is involved in perceiving and processing somatosensory events like touch, temperature, body position and pain. It also...

In this video, Leslie Samuel talks about the anatomy and functions of the occipital lobe, which functions as the visual cortex, and the regions of the temporal lobes, which are involved in Auditory processing, perceiving moving objects...

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In this episode, Leslie Samuel talks about the 3 meningeal layers of the central nervous system - the Pia, Arachnoid and Dura Maters. In it, he shows how these layers protect the CNS. Enjoy!

The nervous system is the control center of the body. But how does it actually work? In this video, we discuss what the nervous system does, the divisions of the nervous system, and how certain functions (like vision and reflexes) work.

BioVid Episode 1 - An Introduction to the Nervous System. This is the first in a series of Videos teaching different...