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Typus
Verschleierung
Bearbeiter
Hindemith
Gesichtet
Yes.png
Untersuchte Arbeit:
Seite: 14, Zeilen: 4-25
Quelle: Smith Mizumori 2006
Seite(n): 3154, 3161, Zeilen: 3154: l. col: 8ff; 3161: r. col: 6ff
Indeed, an extensive literature involving brain lesions has implicated the hippocampus in context processing (for review, see Myers & Gluck, 1994; Anagnostaras et al., 2001; Maren, 2001). For example, hippocampal lesions impair conditioned fear responses to contextual stimuli (Kim & Fanselow, 1992; Phillips & LeDoux, 1992), and lesions of the hippocampus or entorhinal cortex render subjects insensitive to changes in the context (Penick & Solomon, 1991). Also, subjects with fornix lesions have been shown to be severely impaired in learning two different discrimination tasks that were trained in different contexts (Smith et al., 2004). In the same subjects, context-specific neuronal firing patterns were degraded in structures receiving hippocampal input via the fornix (i.e., anterior thalamus and cingulate cortex). Such findings infer that the hippocampus generates a unique context code that modulates processing in downstream structures.

Furthermore, the hippocampus has been widely implicated in episodic memory (e.g., Tulving & Markowitsch, 1998; Aggleton & Brown, 1999; Eichenbaum & Cohen, 2001). Hippocampal neurons respond preferentially to conjunctions of stimuli, such as the concurrence [sic] of a conditional stimulus and a place (Wood et al., 1999; Moita et al., 2003), and spatial firing can be contingent on past or future actions (Frank et al., 2000; Wood et al., 2000; Ferbinteanu & Shapiro, 2003). Findings such as these suggest that hippocampal neurons encode the relations among stimuli in the interest of episodic memory. Smith and Mizumori (2006) recently suggested that the hippocampus contributes contextual information to a wider circuitry for the formation of episodic memories. Therefore, episodic memory may be mediated by extended circuitry that includes, but is not limited to, the hippocampus.

[page 3154]

An extensive literature involving brain lesions has implicated the hippocampus in context processing (for review, see Myers and Gluck, 1994; Anagnostaras et al., 2001; Maren, 2001). For example, hippocampal lesions impair conditioned fear responses to contextual stimuli (Kim and Fanselow, 1992; Phillips and LeDoux, 1992), and lesions of the hippocampus or entorhinal cortex render subjects insensitive to changes in the context (Penick and Solomon, 1991; Freeman et al., 1997). Also, subjects with fornix lesions were severely impaired in learning two different discrimination tasks that were trained in different contexts (Smith et al., 2004). In the same subjects, context-specific neuronal firing patterns were degraded in structures receiving hippocampal input via the fornix (anterior thalamus and cingulate cortex). These findings suggested that the hippocampus generates a unique context code that modulates processing in downstream structures.

[page 3161]

The hippocampus has been widely implicated in episodic memory (Tulving and Markowitsch, 1998; Aggleton and Brown, 1999; Eichenbaum and Cohen, 2001). Hippocampal neurons respond preferentially to conjunctions of stimuli, such as the co-occurrence of a conditional stimulus and a place (Wood et al., 1999; Moita et al., 2003), and spatial firing can be contingent on past or future actions (Frank et al., 2000; Wood et al., 2000; Ferbinteanu and Shapiro, 2003). Findings such as these suggest that hippocampal neurons encode the relations among stimuli in the interest of episodic memory. [...]

[...]

[...] Therefore, episodic memory may be mediated by extended circuitry that includes, but is not limited to, the hippocampus. [...] The present results suggest that the hippocampus contributes contextual information to a wider circuitry for the formation of episodic memories.

Anmerkungen

Smith and Mizumori (2006) are given as reference for one result. However, this refers not to the source of the copied text, but to a different publication (see list of references):

Smith, D.M. & Mizumori, S.J.Y. (2006). Hippocampal place cells, context, and episodic memory. Hippocampus, 16, 716-729.

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(Hindemith) Singulus

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