Emotional specificity of startle potentiation during the early stages of picture viewing.

Potentiation of the startle blink reflex shortly after picture onset has only been reported in a sample of high animal-fear participants during fear-evoking stimuli. The experiment tested the emotional specificity of startle reflex modification at early (300 ms) and late (2-5 s) stages of picture viewing in an unselected sample (n=55). Participants viewed two negative picture categories, threat and disgust contents, in addition to neutral and positive pictures. Blink potentiation occurred for threat contents at both probe times, relative to neutral responses. Disgust contents only potentiated blinks relative to positive content responses. These results are inconsistent with a basic, prepulse interpretation of early startle modification and suggest that affective modification can be observed shortly after picture onset, depending on the specific emotional content of the picture.

[1]  M. Bradley,et al.  Pictures as prepulse: attention and emotion in startle modification. , 1993, Psychophysiology.

[2]  P. Venables,et al.  Direct measurement of skin conductance: a proposal for standardization. , 1971, Psychophysiology.

[3]  M. Bradley,et al.  Startle Modification: Affect and the Startle Reflex , 1999 .

[4]  P. Lang,et al.  The startle probe response: a new measure of emotion? , 1988, Journal of abnormal psychology.

[5]  M. Bradley,et al.  Emotion and motivation I: defensive and appetitive reactions in picture processing. , 2001, Emotion.

[6]  L. Hawk,et al.  Addressing the specificity of affective startle modulation: fear versus disgust , 2002, Biological Psychology.

[7]  M. Dawson,et al.  The varying time courses of attentional and affective modulation of the startle eyeblink reflex. , 1996, Psychophysiology.

[8]  M. Dawson,et al.  Affective Reactions in the Blink of an Eye: Individual Differences in Subjective Experience and Physiological Responses to Emotional Stimuli , 1998 .

[9]  T. Blumenthal,et al.  A relationship between inhibition of the acoustic startle response and the protection of prepulse processing , 1996, Psychobiology.

[10]  Arne Öhman,et al.  Fear and anxiety as emotional phenomena: Clinical phenomenology, evolutionary perspectives, and information-processing mechanisms. , 1993 .

[11]  A. Ohman,et al.  Fear appears fast: temporal course of startle reflex potentiation in animal fearful subjects. , 1999, Psychophysiology.

[12]  P. Lang,et al.  Individual differences in autonomic response: conditioned association or conditioned fear? , 1985, Psychophysiology.

[13]  M. Balaban,et al.  Salience of fear/threat in the affective modulation of the human startle blink , 1994, Biological Psychology.

[14]  A. van Boxtel,et al.  Optimal EMG signal bandwidth and interelectrode distance for the recording of acoustic, electrocutaneous, and photic blink reflexes. , 1998, Psychophysiology.

[15]  M. Bradley,et al.  Emotion and motivation II: sex differences in picture processing. , 2001, Emotion.

[16]  A. J. Fridlund,et al.  Guidelines for human electromyographic research. , 1986, Psychophysiology.

[17]  M. Bradley,et al.  Emotion, Motivation, and Anxiety: Brain Mechanisms and Psychophysiology the Motivational Organization of Emotion Patterns of Human Emotion Emotion and Perception the Psychophysiology of Picture Processing Neural Imaging: Motivation in the Visual Cortex Motivational Circuits in the Brain , 2022 .

[18]  M. Bradley,et al.  The psychopath as observer: emotion and attention in picture processing. , 2000, Journal of abnormal psychology.

[19]  E. Cook,et al.  Independence of valence modulation and prepulse inhibition of startle. , 2000, Psychophysiology.

[20]  M. Bradley,et al.  Affective reactions to briefly presented pictures. , 2001, Psychophysiology.