Brief communication: a software solution for reducing startle eyeblink responses.

We examined the viability of a software-based spectral method for reducing acoustic startle eyeblink responses. Fifteen young adults were presented with a 95 dB burst of white noise for 50 ms while they viewed slides that varied in affective valence. The startle EMG responses were analyzed using a discrete Fourier transform software-based spectral method. A significant linear trend was found between slide valence and startle amplitude, replicating previous work. Subjects' startle responses became more augmented as the content of the slides became more unpleasant. The advantages of software-based solutions for reducing startle EMG responses are discussed.