Uncover the Secrets of Nerve Impulses

Julius Bernstein suggested that nerve impulses were an electrochemical message created by the movement of ions through the nerve cell membrane.

The evidence supporting Bernstein's theory was provided when K.S. Cole and H.J. Curtis placed a tiny electrode inside the large nerve cell of a squid and detected a rapid change in the electrical potential difference across the membrane every time the nerve became excited.

The resting potential of the nerve cell membrane is normally near 70 mV (millivolts).

<p>An action potential is the reversal of potential that occurs when the nerve cell becomes excited.</p> Signup and view all the answers

<p>The 40 mV potential during an action potential does not last more than a few milliseconds (ms) before returning to the resting potential of 70 mV.</p> Signup and view all the answers

<p>The scope of neuroscience includes studying the nervous system at different scales and using various approaches to understand its functions and disorders.</p> Signup and view all the answers

<p>Physiology, anatomy, molecular biology, developmental biology, cytology, psychology, physics, computer science, chemistry, medicine, statistics, and mathematical modeling are combined in neuroscience.</p> Signup and view all the answers

<p>The understanding of the biological basis of learning, memory, behavior, perception, and consciousness.</p> Signup and view all the answers

<p>The techniques used by neuroscientists have expanded from molecular and cellular studies of individual neurons to imaging of sensory, motor, and cognitive tasks in the brain.</p> Signup and view all the answers

<p>Neuroscience is the scientific study of the nervous system, its functions, and disorders, encompassing a wide range of disciplines and approaches.</p> Signup and view all the answers