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Beta blockers are a class of medications originally developed to treat hypertension and other cardiovascular conditions. In recent years, they have become an increasingly popular option to treat situational or performance anxiety. In this video, I discuss the pharmacological mechanism of beta blockers and how they are thought to relieve the symptoms of performance anxiety experi...
A panic attack is a sudden episode of intense fear or discomfort that comes on abruptly and involves a cascade of physical and cognitive symptoms. In this video, I discuss the neuroscience of panic attacks, focusing primarily on the brain regions that are thought to be involved with the initiation and symptoms of panic attacks. To watch the video, click the "continue reading" li...
One of the most distinctive features of the human brain is that its surface is covered with a complex pattern of grooves and ridges. The grooves are called sulci, and the ridges are called gyri. In this video, I will discuss some of the most prominent sulci and gyri in the brain, many of which serve as important landmarks of the cerebral cortex. To watch the video, click the "co...
In this video, I discuss the neuroscience of sleep, covering sleep stages, arousal- and sleep-promoting systems in the brain, REM vs. non-REM sleep and the parts of the brain responsible for each, factors such as adenosine that cause us to feel tired, circadian rhythms and how they are regulated by the brain, melatonin, and the functions of sleep. To watch the video, click the "...
Subarachnoid hemorrhage is bleeding into the subarachnoid space, the thin space between two layers of the meninges: the arachnoid mater and pia mater. Subarachnoid hemorrhage is a type of stroke and a medical emergency with a high risk of mortality. This video discusses the causes, symptoms, and treatment of subarachnoid hemorrhage. To watch the video, click the "continue readin...
