function[model] = prf_convolve(obj, stick_model, slope)

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

[obj prf]= obj.pupil_response_function(time);

model = conv(stick_model, prf, 'same')';


slope_model = 1:length(model);
slope_model = slope_model .* slope;
model = model + slope_model';