In the first essay, I examine the impact of exogenous changes in stock prices on managers' voluntary disclosures. Specifically, I investigate whether stock price declines prompt managers to voluntarily disclose firm-value-related information that was withheld prior to the decline because it was "unfavorable" but became favorable at a lower stock...
Amyotrophic lateral sclerosis (ALS) is characterized by progressive motoneuron loss. Autopsy from thoracic spinal tissues of sALS patients revealed a significant loss of large motoneurons while medium and small motoneurons were relatively unaffected. Using two-photon microscopy, we observed a soma hypertrophy of neonatal motoneurons in mice overexpressing mutant human G93A-superoxide...