1 Gray matter located on the surface of the brain is called cortex (e.g., cortex of the cerebral hemispheres, cortex of the cerebellum). 2  Masses of gray matter located deeper in the brain are called nuclei .(e.g., brainstem nuclei, nuclei of the thalamus).yramidal cells are the efferent (long-axon) cells of the cerebral cortex. The name refers to the shape of the cell body as seen in standard sections perpendicular to the cortical surface. The apex of the pyramid points toward the cortical surface.
Panic attacks are periods of intense fear or apprehension of sudden onset accompanied by at least four or more bodily or cognitive symptoms (such as heart palpitations, dizziness, shortness of breath, or feelings of unreality) and of variable duration from minutes to hours.anic attacks are periods of intense fear or apprehension of sudden onset accompanied by at least four or more bodily or cognitive symptoms (such as heart palpitations, dizziness, shortness of breath, or feelings of unreality) and of variable duration from minutes to hours.
Panic Attacks and Panic Disorder Symptoms, Treatment, and Tips for Overcoming Panic. A panic attack is a sudden surge of overwhelming anxiety and fear. Your heart pounds and you canât breathe. You may even feel like youâre dying or going crazy. Left untreated, panic attacks can lead to panic disorder and other problems. They may even cause you to withdraw from normal activities.