Support for the interruption and protection hypotheses of prepulse inhibition of startle: evidence from a modified Attention Network Test
| Autor: | Terry D. Blumenthal, Tamara E. Spence, J. Zachary Reynolds |
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| Rok vydání: | 2014 |
| Předmět: |
Male
Startle response medicine.medical_specialty Reflex Startle Adolescent Cognitive Neuroscience Experimental and Cognitive Psychology Stimulus (physiology) Audiology Fear-potentiated startle Young Adult Developmental Neuroscience Attention network medicine Reaction Time Humans Attention Biological Psychiatry Prepulse inhibition medicine.diagnostic_test Blinking Endocrine and Autonomic Systems Prepulse Inhibition General Neuroscience Cognition Startle stimulus Neuropsychology and Physiological Psychology Neurology Acoustic Stimulation Female Psychology Cognitive psychology |
| Zdroj: | Psychophysiology. 52(3) |
| ISSN: | 1540-5958 |
| Popis: | The startle response may interrupt information processing (interruption hypothesis), and prepulse inhibition of startle (PPI) may protect that processing from interruption (protection hypothesis). These hypotheses were tested by measuring startle eyeblinks during an Attention Network Test (ANT), a combined flanker and cue reaction time (RT) task that measures the efficiency of multiple attentional networks. ANT trials with and without startle stimuli presented in the interval between the visual cue (prepulse) and target were compared. Results showed that the startle stimulus served as an alerting stimulus, speeding RT in the ANT. However, this reaction time speeding was most pronounced on trials with no startle response (100% PPI). This suggests that the alerting effect of the startle stimulus was attenuated by the startle response, and that PPI decreased the degree of this interference, in support of the interruption and protection hypotheses. |
| Databáze: | OpenAIRE |
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