Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation (Tables)

v2.4.0.8
Stock Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2013
Stock Based Compensation [Abstract]  
Summarization of stock-based compensation
The following table summarizes stock-based compensation for the three and nine months ended September 30, 2013 and 2012:

 
Three months ended
September 30,
  
Nine months ended
September 30,
  
 
2013
  
2012
  
2013
  
2012
  
Research and development
   $9,000     $9,000     $28,000     $83,000  
Selling, general and administrative
     17,000       76,000       326,000       224,000  
           Stock-based compensation expense
   included in operating expense
   $26,000     $85,000     $354,000     $307,000  

Weighted average Black Scholes fair value assumptions
Our weighted average Black-Scholes fair value assumptions used to value the grants in the first nine months of 2012 are as follows:
     
   
9/30/12
  
Expected life(b)
 
5.5 yrs
  
Risk free interest rate
    
0.6
%
Expected volatility(a)
   
96
%
Expected dividend yield
    
0.0
%
         
 
(a)
Reflects movements in our stock price over the most recent historical period equivalent to the expected life.
(b)
Based on the simplified method.