Textbook Notes (368,148)
Canada (161,680)
Psychology (1,112)
PSYC 271 (57)
Chapter 11

PSYC 271 Chapter 11: PSYC271 Chapter Textbook Notes 11
Premium

4 Pages
94 Views
Unlock Document

Department
Psychology
Course
PSYC 271
Professor
Amanda Maracle
Semester
Fall

Description
PSYC271 – CHAPTER 11: Learning, Memory, and Amnesia Learning – how experience changes the brain Memory – how these changes are stored and subsequently reactivated - Knowledge about these mechanisms has come from significant studies based on patients with brain-damage-produced amnesia (any pathological loss of memory) as well as animal studies 1.1 AMNESIAC EFFECTS OF BILATERAL MEDIAL TEMPORAL LOBECTOMY - H.M was a man who in 1953, at 27, has medial portions of temporal lobes removed due to extreme epilepsy The Case of H.M., The Man Who Changed the Study of Memory - Suffered from one generalized seizure each week and partial ones daily despite huge doses of anti-convulsive medication o Arose from foci in medial portions of left and right temporal lobes - Decided to perform bilateral medial temporal lobectomy by removing medial portions of both temporal lobes o Including: amygdala, hippocampus, and adjacent cortex o The lobe is separated from the rest of the brain by a large cut - Generalized weekly seizures were all but eliminated and partial daily seizures reduced to only a few per day - Left with same perceptual and motor skills but his IQ increased from 104 to 118 - Assessed amnesiac effects on H.M., but there are various forms, o Retrograde (backward-acting) amnesia for inability to remember things before the test o Anterograde (forward-acting) amnesia for inability to remember things after the test ▪ Short-term memory (storage of new information for brief periods of time while a person attends to it) is affected ▪ Long-term memory (storage of new information once stopped attending to it) may also be affected - Had mild retrograde amnesia for events 2 years before event - Memory of events was intact as well as short-term memory (6 digit span) - Almost complete inability to form new long-term memories - As if he was continually regaining consciousness o Never remembered people’s names, conversations, never able to remember new address – lost his future PSYC271 – CHAPTER 11: Learning, Memory, and Amnesia Formal Assessment of H.M.’s Anterograde Amnesia: Discovery of Unconscious Memories - 7 tests were used to assess H.M.’s long term memory o Determined severe deficits in LTM o Able to store LTM, but H.M. had no conscious awareness of this Digit Span + 1 Test - Test of verbal long term memory - Asked to repeat 5 digits that were read to him at 1-second intervals, to which he repeated correctly - After 25 trials, unable to repeat 8-digit sequence, whereas most people can do up to 15 digits in this amount of time Block-Tapping Memory Span Test - H.M. had global amnesia where he could not remember information presented in all sensory modalities - Array of 9 blocks spread on a board in front of him, watched experimenter tap a series of them, and asked to repeat the tapping sequence - Had a block-tapping-span of 5 blocks, in the normal range, but could not learn 6 Mirror-Drawing Test - Draw a line within boundaries of star-shaped target by watching his hand i
More Less

Related notes for PSYC 271

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit