Description: Segment 1 Edwards introduces the lecture and describes the general physiology of muscle activity. Time start: 00:00:00:00 Time end: 00:04:51:00 Length: 00:04:51:00 Segment 2 Edwards stands next to a patient on an examining table and, with him as a model, demonstrates some standard neurological tests. Time start: 00:04:51:00 Time end: 00:10:04:00 Length: 00:05:13:00 Segment 3 Edwards looks at the relationship between the force of contraction and the time for which a contraction can be held. He uses graphs to chart this information. Time start: 00:10:04:00 Time end: 00:15:22:00 Length: 00:05:18:00 Segment 4 Edwards uses further diagrams to show the force measurements of voluntary contractions compared to electrically stimulated contractions. Time start: 00:15:22:00 Time end: 00:20:16:00 Length: 00:05:54:00 Segment 6 Edwards uses graphs and slides to illustrate the findings of differing chemistry biopsies on muscles before, during and after contraction. Time start: 00:25:43:15 Time end: 00:29:54:08 Length: 00:04:10:18. Segment 7 Edwards compares levels of muscle fatigue in normal subjects and those with neuromuscular problems. He goes into detail as to how these differ further by comparing different kinds of muscle fatiguing illnesses including hypothyroid myopathy, anaerobic glycosis and McArdle's syndrome. Time start: 00:29:54:08 Time end: 00:34:55:00 Length: 00:05:00:17. Segment 8 Edwards refers to photomicrographs showing disease in the muscle structures of various illnesses. Time start: 00:34:55:00 Time end: 00:39:15:00 Length: 00:04:20:00. Segment 9 Edwards shows some needle biopsy samples of human muscles, then concludes the lecture. Time start: 00:39:15:00 Time end: 00:46:19:04 Length: 00:07:04:04