Perceptual learning, awareness, and the hippocampus
- PMID: 11811672
- DOI: 10.1002/hipo.1093
Perceptual learning, awareness, and the hippocampus
Abstract
Declarative memory depends on the hippocampus and related medial temporal lobe and diencephalic structures. Declarative memory has usually been found to be available to conscious recollection. A recent study (Chun and Phelps, Nat Neurosci 1999;2:844-847) found that damage to the medial temporal lobe (including the hippocampus) impaired performance on a perceptual learning task, yet the learning was accomplished in the absence of memory for the stimuli. This finding raised the possibility that some hippocampus-dependent tasks may be inaccessible to awareness and may be performed without evoking conscious memory processes. Using the same task, we show that when damage is confined largely to the hippocampal formation, perceptual learning is intact. Thus, the available data suggest that damage limited to the hippocampal formation does not impair nonconscious (nondeclarative) memory. Further, the data do not contradict the idea that hippocampus dependent memory is accessible to conscious recollection. Finally, perceptual learning was impaired in patients, with extensive damage to the medial temporal lobe and with additional variable damage to lateral temporal cortex.
Similar articles
-
Perception and the medial temporal lobe: evaluating the current evidence.Neuron. 2009 Mar 12;61(5):657-66. doi: 10.1016/j.neuron.2009.02.008. Neuron. 2009. PMID: 19285462 Review.
-
Perirhinal and hippocampal contributions to visual recognition memory can be distinguished from those of occipito-temporal structures based on conscious awareness of prior occurrence.Hippocampus. 2007;17(11):1081-92. doi: 10.1002/hipo.20347. Hippocampus. 2007. PMID: 17696171
-
Fractionation of memory in medial temporal lobe amnesia.Neuropsychologia. 2007 Mar 25;45(6):1160-71. doi: 10.1016/j.neuropsychologia.2006.10.011. Epub 2006 Nov 28. Neuropsychologia. 2007. PMID: 17129591
-
The role of the perirhinal cortex and hippocampus in learning, memory, and perception.Q J Exp Psychol B. 2005 Jul-Oct;58(3-4):246-68. doi: 10.1080/02724990444000186. Q J Exp Psychol B. 2005. PMID: 16194968 Review.
-
Perceptual deficits in amnesia: challenging the medial temporal lobe 'mnemonic' view.Neuropsychologia. 2005;43(1):1-11. doi: 10.1016/j.neuropsychologia.2004.07.017. Neuropsychologia. 2005. PMID: 15488899 Clinical Trial.
Cited by
-
No evidence for contextual cueing beyond explicit recognition.Psychon Bull Rev. 2024 Jun;31(3):907-930. doi: 10.3758/s13423-023-02358-3. Epub 2023 Oct 16. Psychon Bull Rev. 2024. PMID: 37845567 Free PMC article.
-
Increased Pupil Size during Future Thinking in a Subject with Retrograde Amnesia.Brain Sci. 2022 Jan 15;12(1):115. doi: 10.3390/brainsci12010115. Brain Sci. 2022. PMID: 35053858 Free PMC article.
-
Raising awareness about measurement error in research on unconscious mental processes.Psychon Bull Rev. 2022 Feb;29(1):21-43. doi: 10.3758/s13423-021-01923-y. Epub 2021 Jun 15. Psychon Bull Rev. 2022. PMID: 34131891 Review.
-
No explicit memory for individual trial display configurations in a visual search task.Mem Cognit. 2021 Nov;49(8):1705-1721. doi: 10.3758/s13421-021-01185-y. Epub 2021 Jun 7. Mem Cognit. 2021. PMID: 34100195
-
Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search.Sci Rep. 2021 May 3;11(1):9439. doi: 10.1038/s41598-021-88946-6. Sci Rep. 2021. PMID: 33941832 Free PMC article.
Publication types
MeSH terms
Grants and funding
LinkOut - more resources
Full Text Sources