Post traumatic stress disorder post traumatic stress

Info iconThis preview shows pages 15–22. Sign up to view the full content.

View Full Document Right Arrow Icon
Post-Traumatic Stress Disorder Post-Traumatic Stress Disorder ! PTSD patients ! Impaired at Extinction ! Even when a stimulus no longer predicts a shock, it still yields a response ! In Skin Responses ! In Amygdala ! In vmPFC
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
A fear response can be evoked through both a ± high ² and a ± low ² pathway Perception of fear without awareness Very Brief (17ms) masked stimuli
Background image of page 16
Perception of fear without awareness Perception of fear without awareness
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Emotional effects on the attentional blink paradigm Fear-enhanced processing of faces in the fusiform gyrus is reduced in patients with amygdala damage
Background image of page 18
! Facial Expressions ! Anatomy of Emotion ! Fear ! Emotion and Memory ! Other Emotions Agenda There is a double dissociation between Amygdala and Hippocampus damage for fear conditioning Patient S.P. ! S.P. knew that the square would lead to a shock, but did not show implicit memory ! Patients with Hippocampal damage show implicit memory without the learned explicit knowledge
Background image of page 19

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
The Amygdala is involved in both implicit and explicit emotional memory ! For both implicit and explicit fear learning, the Amygdala is required for the fear response Flashbulb Memory Very vivid memory of a powerful event An Episodic memory. Very Detailed. ± Indelible ² ? – Ex: Sept 11 Terrorist attacks, Earthquake – Princess Diana ³ s Death, Challenger Explosion, – JFK Assassination, Pearl Harbor – Can also be a personal event - family tragedy, etc – More likely to occur when event is: • Important, • Surprising, – Evidence that emotional content is important for memory
Background image of page 20
Strong emotional arousal can enhance long-term memory ! Amygdala improves long term memory in three ways: ! Increases subjective richness, contextual details (Dolcos et al. 2004) ! Improves consolidation (McGaugh 1996) ! Reduces forgetting for arousing stimuli (LaBar & Phelps 1998) ! Facial Expressions ! Anatomy of Emotion ! Fear ! Emotion and Memory ! Other Emotions Agenda
Background image of page 21

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 22
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page15 / 26

Post Traumatic Stress Disorder Post Traumatic Stress...

This preview shows document pages 15 - 22. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online