function[model] = stick_model(obj, varargin)

if nargin == 1
   amplitudes = ones(1, length(obj.labels));    
else
    amplitudes = varargin{1};
    
end

if (length(amplitudes) ~= length(obj.labels))
    error('More parameters than events.');
end

start_trial= obj.time(1);
time = obj.deconvolution.time - start_trial;

model = zeros(1, length(time));

for l = 1:length(obj.labels)
    onset = obj.labels(l).time - start_trial;           
    post_onset_ind = find(time > onset);    
    model(post_onset_ind(1)) = amplitudes(l);    
end