objective: children with attention deficit hyperactivity disorder (adhd) do not process most information due to inattention and loss of the opportunity to save and retrieve information. therefore, these children experience memory impairment. although visual memory has been previously studied in children with adhd, iconic memory in these children has been less evaluated. we aimed to study the po...

Working memory impairment is considered a core deficit in schizophrenia, but the precise nature of this deficit has not been determined. Multiple lines of evidence implicate deficits at the encoding stage. During encoding, information is held in a precategorical sensory store termed iconic memory, a literal image of the stimulus with high capacity but rapid decay. Pathologically increased iconi...

Iconic memory is best assessed with the partial report procedure in which an array of letters appears briefly on the screen and a poststimulus cue directs the observer to report the identity of the cued letter(s). Typically, 6-8 cue delays or 600-800 trials are tested to measure the iconic memory decay function. Here we develop a quick partial report, or qPR, procedure based on a Bayesian adapt...

Visual short-term memory (VSTM) enables us to actively maintain information in mind for a brief period of time after stimulus disappearance. According to recent studies, VSTM consists of three stages - iconic memory, fragile VSTM, and visual working memory - with increasingly stricter capacity limits and progressively longer lifetimes. Still, the resolution (or amount of visual detail) of each ...

OBJECTIVE Children with attention deficit hyperactivity disorder (ADHD) do not process most information due to inattention and loss of the opportunity to save and retrieve information. Therefore, these children experience memory impairment. Although visual memory has been previously studied in children with ADHD, iconic memory in these children has been less evaluated. We aimed to study the pos...

By the late 19th century, tests of adults' short-term visual memory—how much one retains from a briefly presented display—had acquired a familiar character: An alphanumeric array was presented and then removed, and participants were asked to report the items they had seen (Wundt, 1912). These whole-report tests revealed memory capacities of three to four items (Cattell, 1886; Sperling, 1960). H...

The experiments discussed in this report do not have a direct relationship to each other but represent work on a series of sub-issues within the general framework of visual processing of information. Because of this discreteness, the report is organized into a series of papers. The first is a general review of tachistoscopic work on iconic memory and issues related to iconic memory. Following t...