Vividness of imagery: varies across individuals and contexts (familiarity and expertise may enhance vividness of mentall images.) High ratings of vividness do not mean better memory necessarily. Use of imagery as a mnemonic technique to aid memory: | ---Method of loci. Von restorff effect --- Special places strategy (hide an item to an unexpected place to keep it secure,however even though we believe its memorable because of its distinctiveness we often forget). Not as effective as the method of loci. Manipulations of mental images: mental rotation mental rotation is rotating mental image in space. Which areas of the brain are involved in mental rotation? Suggested that it may primarily involve the right hemisphere( not entirely supported) How egocentric perspective transformations copare to metal rotation? Rather than moving objet in space, egocentric perspective. Transform. Involve moving oeself in space to view diff objects How do mental images guide our perception: menatal images may be serving to prepare us for the actual perception of that image How do other types of imagery such as auditory imagery compare to perception? Ppl are faster at saying that two notes were the same when the timbre (instrument) was consistent across two notes. Auditory imagery vs. perception: are similar brain areas active during auditory imagery as during auditory perception? YES! Interesting cases of imagery: ----Synesthesia ( sensory experience in which a stimulus that would normally evoke a
PSYC 213 Winter 2018 Malka A-r response in one sensory modality also invokes a response in other sensory modalitie(s) ). Chromesthesia : most common experiences among synesthetes. Its the association of colour and sound. How does synesthesia influence memory? -It may aid memory in specific cases ( participants with chromesthesia and absolute pitch have reported that their chromesthesia aids their memory for specific pitches and music) ---- Amusia: deficits in musical abilities; also called tone -defness. Ppl with amusia have been shown to have deficits in visual/spatial imagery ( this suggests that imagery in different sensory domains may interact with one another) Lecture 15 Language: a shared symbolic system for communication. ---symbolic: units that stand for something --- shared: common among members ---Communication : translates thoughts Langayge and the brain: generally left hemisphere for language although some aspect of language supported by right hemisphere ( the melody of language aka prosody). Particular parts of left hemisph in charge of particular language functions. Broca’s aphasia : left inferior frontal gyrus. symptoms: intact language comprehension, intact intellectual comprehension but trouble producing fluent speech articulatory movement. First case 1861 (patient Tan), Tan was 3o yrs old. Could onle speak one syllable. Autopsy revealed large lesion in the posterior inferior frontal gyrus. In 2016: man could only say yes or no after a stroke but still understands everything Wernicke’s aphasia : Superior temporal lobe (btwn temporal and parietal lobe) discovered 1874. Receptive or fluent aphasia.
- Winter '08
- psyc, Malka