amnesia is a memory deficit that occurs as a result of brain damage. amnesia is severe loss of explicit memory, usually affecting declarative memory more than procedural memory anterograde amnesia is Loss of ability to remember events after an injury. anterograde amnesia is inability explicitly to recall events that occur after whatever trauma caused the memory loss (affects the acquisition of semantic memory, but apparently not the acquisition of procedural memory; cf. retrograde amnesia; see also amnesia) episodic buffer is a limited-capacity system that is capable of binding information from the subsidiary systems and from long-term memory into a unitary episodic representation episodic memory is encoding, storage, and retrieval of events or episodes that the rememberer experienced personally at a particular time and place explicit memories are memories that a subject can consciously recall. explicit memory is a form of memory retrieval in which an individual consciously acts to recall or to recognize particular information hypothetical construct is concept that cannot be directly measured or observed but that may be used as a mental representation for understanding the workings of a psychological phenomenon icon is the name used by Neisser for the information representation in visual sensory memory. iconic store is a sensory register for the fleeting storage of discrete visual images in the form of icons (visual images that represent something, usually resembling whatever is being represented; see sensory store) implicit memories are memories that cannot be displayed in tests that call for explicit recall, but that can be demonstrated by performance on various tasks. implicit memory is a form of memory retrieval in which an individual shows enhanced performance on a task, as a result of prior experience, despite having no conscious awareness of recollecting the prior experience infantile amnesia is inability to recall events that happened during early development of the brain (usually the first 3 to 5 years; see amnesia, memory) levels-of-processing framework is a way of looking at memory storage, which postulates that memory does not comprise any specific number of separate stores but instead comprises a continuous dimension in which the depth to which memory is encoded corresponds to the ease of retrieving the item: the deeper the level of processing, the higher the probability that an item may be retrieved (an alternative view is the three-stores dew, in which memory is viewed as comprising a sensory store, a short-term store, and a long-term store) long-term store is according to a three-stores model of memory, the hypothetical construct of a long-term store has a greater capacity than both the sensory store and the short-term store, and it can store information for very long periods of time, perhaps even indefinitely memory is the means by which individuals draw on past knowledge in order to use such knowledge in the present; the dynamic mechanisms associated with the retention and retrieval of information; the three operations through which information is processed by and for memory are encoding, storage, and retrieval mnemonist is person who uses memory-enhancing techniques for greatly improving his or her memory or who has a distinctive sensory or cognitive ability to remember information, particularly information that is highly concrete or that can be visualized readily prime is a node within a network, which activates a connected node in the network; this activation is known as the priming effect priming effect is the enhanced access to a particular stimulus or item of information, as a result of recent activation of or exposure to that stimulus or datum; according to the network view of memory processes, the effect is due to the activation of a node by a prime (activating node) to which the node is connected in a network, in the process of spreading activation priming is an enhancement of the processing of a stimulus as a function of prior exposure. priming is the process by which particular initial stimuli activate mental pathways, thereby enhancing the ability to process subsequent stimuli related to the priming stimuli in some way; the activation of a node by a prime (activating node) to which the node is connected in a network recall is a process of memory often employed in memory tasks, in which an individual is asked to produce (not just to recognize as correct) a fact, a word, or other item from memory recognition is a process of memory often employed in memory tasks, in which an individual is asked just to recognize as correct (not to produce) a fact, a word, or other item from memory recognition-by-components (RBC) theory is a theory of object perception, which suggests that objects are recognized based on the perception of the distinctive arrangement of various geons (a set of three-dimensional geometrical elements) that compose each object retrograde amnesia is inability explicitly to recall events that occurred before a trauma that causes memory loss (often, the amnesic gradually begins to recall earlier events, starting with the earliest experiences and gradually recalling events that occurred closer to the time of the trauma, perhaps eventually even recalling the traumatic episode; cf. anterograde amnesia; see also amnesia) retrograde amnesia is loss of memories for things that occurred before an injury. semantic memory is encoding, storage, and retrieval of facts (e.g., declarative knowledge about the world) that do not describe the unique experiences of the individual recalling the facts; sometimes distinguished from retrieval of information that has a particular temporal context in which the individual acquired the facts sensory store is according to a three-stores model of memory, the hypothetical construct of a sensory store has the smallest capacity for storing information (i.e., for only a fleeting sensory image) and has the shortest duration for memory storage (i.e., for only fractions of a second; see also iconic store) short-term memory is a proposed intermediate memory system in which information had to reside on its journey from sensory memory to long-term memory. short-term store is according to a three-stores model of memory, the hypothetical construct of a short-term store has a modest capacity (i.e., for only about seven items, give or take a couple of items) and has a duration for storing information for only a number of seconds unless strategies (e.g., rehearsal) are used for keeping the information in the short-term store for longer periods of time working memory is a portion of memory that may be viewed as a specialized part of long-term memory; it holds only the most recently activated portion of long-term memory and moves these activated elements into and out of short-term memory (which may be viewed as the narrow portion of working memory that enters immediate awareness); some psychologists consider working memory to be a hypothetical construct in opposition to the three-stores view, but others consider it a complement to the three-stores view