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Episodic Memory (memory for episodes; also called autobiographical memory) Encoding Retrieval Encoding x Retrieval interactions Amnesia/Implicit memory Memory for natural settings
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Episodic Memory (memory for episodes) Encoding Retrieval Encoding x Retrieval interactions Amnesia/Implicit memory Memory for natural settings
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Episodic Memory (memory for episodes) Amnesia/Implicit memory Basics of amnesia A stunning finding
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Materials Encoding Tasks Retrieval Tasks Subjects/Participants
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Amnesia condition characterised by intact sensory functioning and relatively normal IQ; extraordinarily poor ability to remember events (episodes) and in some cases, learn new information almost always caused by some physical trauma to the brain timee Brain trauma occurs
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Amnesia Two types of amnesia anterograde – inability to learn new information/remember new events after the trauma most often studied timee Brain trauma occurs
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Amnesia Two types of amnesia retrograde – inability to remember events (sometimes information) prior to the trauma timee Brain trauma occurs
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Amnesia How to Become an Amnesic 101
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Amnesia How to Become an Amnesic 101 Closed head injury Open wound (penetration of the skull)
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How to Become an Amnesic 101 Closed head injury Open wound (penetration of the skull)... more minor injuries – shrinking window Time 1e1 Brain trauma occurs Time 2e Brain trauma occurs
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How to Become an Amnesic 101 Closed head injury Open wound (penetration of the skull)
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How to Become an Amnesic 101 Closed head injury Open wound (penetration of the skull) Brain Tumor Stroke Encephalitis
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How to Become an Amnesic 101 Closed head injury Open wound (penetration of the skull) Brain Tumor Stroke Encephalitis Anoxic episode Surgery
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How to Become an Amnesic 101 Closed head injury Open wound (penetration of the skull) Brain Tumor Stroke Encephalitis Anoxic episode Surgery Alzheimer’s disease Huntington’s disease (chorea) Korsakoff’s syndrome
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Amnesia Hippocampus structure deep in the brain very important for learning
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Amnesia assessed in terms of a basic 2-store model
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P(r) 1.0 0.0 Proportion of Items Recalled as a Function of List Position and Subject Type List Position 1.............. 16 Normal Amnesic
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Amnesia fairly normal short-term memory original thought was that amnesics couldn’t transfer information from STS to LTS (info unavailable)
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demo
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parachute gondola yacht gargoyle magazine
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revolver tentacle telephone champion liberty
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pyramid conch jungle library coffee
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k_w_ p_y_ho_o_y p_nc_ea_ g_n_ol_ m_r__ni c_s_e_ol_ c_am_io_ t_mp__me_t m__a_ine t_ntr_m _u_gl_ p_s_ry a_s_ssi_ p_r_mi_ l_be_t_
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Amnesia Important work in late 1960s-early 1970s Warrington & Weiskrantz (1970) compared memory performance for normals (8) and amnesics (4) memory for 4 sets of 24 words (presented visually and auditorily) 1 set of words for each of four different tests
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Warrington & Weiskrantz (1970) compared memory performance for normals (8) and amnesics (4) Control Amnesic Free recall 13.0 8.0 Recognition 18.710.5
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Warrington & Weiskrantz (1970) compared memory performance for normals (8) and amnesics (4) Control Amnesic Free recall 13.0 8.0 Recognition 18.710.5 Fragmented words 11.111.5 Word stem completion 16.014.5 (e.g., 1 st 3 letters given)
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Warrington & Weiskrantz (1970) Control Amnesic Free recall 13.0 8.0 Recognition 18.710.5 Fragmented words 11.111.5 Word stem completion 16.014.5 (e.g., 1 st 3 letters given) Amnesics impaired on free recall and recognition. Amnesics NOT impaired on the word identification/completion tests!
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Warrington & Weiskrantz (1970) Amnesics impaired on free recall and recognition. Amnesics NOT impaired on the word identification/completion tests! (Note the dissociations.) Implication: Information transferred to LTM but not able to be retrieved. Reflects a retrieval problem (not encoding or storage).
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Episodic Memory (memory for episodes) Encoding Retrieval Encoding x Retrieval interactions Amnesia/Implicit memory Memory for natural settings
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