cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.34973/w016-me05
title: Impaired auditory-to-motor entrainment in Parkinson’s disease

description: Several electrophysiological studies suggest that Parkinson's disease (PD) patients have a reduced tendency to entrain to regular environmental patterns. Here we investigate whether this reduced entrainment concerns a generalized deficit or is confined to movement-related activity, leaving sensory entrainment intact. 

Magnetoencephalography was recorded during a rhythmic auditory target detection task in 14 PD patients and 14 control subjects. Participants were instructed to press a button when hearing a target tone amid an isochronous sequence of standard tones. The variable pitch of standard tones indicated the probability of the next tone to be a target. In addition, targets were occasionally omitted to evaluate entrainment uncontaminated by stimulus effects. 

Response times were not significantly different between groups and both groups benefited equally from the predictive value of standard tones. Analyses of oscillatory beta power over auditory cortices showed equal entrainment to the tones in both groups. By contrast, oscillatory beta power and event-related fields demonstrated a reduced engagement of motor cortical areas in PD patients, expressed in the modulation depth of beta power, in the response to omitted stimuli, and in an absent motor area P300 effect. 

Together, these results show equally strong entrainment of neural activity over sensory areas in controls and patients, but, in patients, a deficient translation of the adjustment to the task rhythm to motor circuits. We suggest that the reduced activation reflects not merely altered resonance to rhythmic external events, but a compromised recruitment of an endogenous response reflecting internal rhythm generation.

Note: this dataset contains the MEG data from all 15 PD patients and 15 control subjects that participated in the study. Due to task compliance issues, only 14 participants from each group were included in the reported analysis.
DOI: 10.25549/whit-c170-101262
title: Dick Whittington Photography Collection, 1924-1987
DOI: 10.34973/n1x3-nk86
title: Expectation suppression in early visual cortex depends on task set

description: This is an fMRI dataset that was collected in human participants while we manipulated the predictability of visual stimuli in the periphery. Participants were presented with either predictable or non-predictable visual stimuli while they performed three tasks that differently engaged cognitive resources. We analyzed the BOLD response of voxels in early visual cortex (V1-V3) to investigate whether the effect of expectation on sensory processing was modulated by task set. We also performed a whole-brain analysis. A full account of the paradigm and analyses can be found in the file 'Materials and Methods'.
DOI: 10.25549/whit-c170-100696
title: Dick Whittington Photography Collection, 1924-1987
DOI: 10.25549/whit-c170-74379
title: RJM Steel, Southern California, 1958

description: 35 photographs of RJM Steel, Southern California, 1958. "Subject: RJM Steel; 87-31-84b, [19]58" -- on envelope.
DOI: 10.34973/6hrw-wa78
title: Temporal expectation and attention jointly modulate auditory oscillatory activity in the beta band

description: This is an MEG dataset where we manipulated temporal expectation and temporal attention to pure tones. We analyzed the oscillatory signatures of these tones in sensors overlaying auditory cortex. A full description of the study setup is described in the file named "Methods".
DOI: 10.25549/whit-c170-74509
title: Toronto folks, Victoria B.C. scenics, [s.d.]

description: 28 photographs of Toronto, Ontario, Victoria, British Columbia, Canada. "Subject: Toronto Folks, Victoria B[ritish] C[ompany] Scenics; No. C9-1-2" -- on envelope. "#1 to 7: incl[udes] - Family groups; #9: Lake near Sudbury Canada; 11 to 16: incl[udes] Indoor Pool at Empress Hotel, Victoria, B.C.; 17-21: incl[udes] Totem poles at Victoria; 22: - flower baskets at Victoria; 23: Queen Victoria Statue and Parliament House Victoria; 24 to 27; incl[udes] Parliament B[ui]ld[in]g Victoria; 29, 30: World War Statue, Victoria; 28, 32: Empress Hotel Victoria; 31: Empress Hotel garden; 33, 34: Union Oil Sub Station, Victoria; 35, 36: En route Victoria to Seattle on CPR SS Princess Marguerite; No. C9-1-2" -- on sleeve.
DOI: 10.25549/whittington-ouc12241467
title: Small Disney figures, Southern California, 1940

description: 12 photographs of Disney figures, Southern California, 1940. "Date: Thurs[day]; Time: 10 A.M.; Meet: Mr Bennison; For: Vernon Pottery; At: Studio; Job: Small Figures." -- on card back. "Hours on Job: Day: 4, Night: 1; N[umber] of Neg[ative]s: 18; Illumination Used: studio" -- on card back. "Subject: Small Disney Figures, dishes, & vases; Client: Vernon Pottery, 2300. E52 OX, Mr. Bennison; Classifications: also 8x10; Original Print Order: 2 ea[ch], 1 ea[ch]; Size: 8x10; Finish: gl[ossy]; Mount: to Pickering; Year: 1940; Job: 012-12-81" -- on envelope front. "Operator's Report- Name: Vannice; 15 Original Photographs- At Studio: 8x10, 2 up @ 6.00 ea[ch]; 2 Original Photographs- Size: 8x10 Flower Vases @ 3.50 ea[ch]; 1 [Original Photographs- Size]: 8x10, Plates, cups, & seaucers [sic]; Amount: 90.00, 7.00, 7.50; Extra Charges: Bennison." -- on envelope back.
DOI: 10.25549/whit-c170-99946
title: [Spanish dancer entertains on Olvera Street], Los Angeles, Calif., 1939

description: 17 photographs showing a woman in traditional Mexican clothing playing the guitar and posing with a wagon and other artifacts on Olvera Street in Los Angeles, California, 1939 June.
DOI: 10.25549/whit-c170-76205
title: "Answer to school questions" Fall clothes, Southern California, 1935

description: 8 photographs of men modeling clothing, Southern California, 1935. "Subject: 'Answers to school questions' Fall clothes; Client: Silverwoods, charged on 8-12-60; Original Print Order: 1 ea[ch]; Size: contact; Finish: glossy; 8x10 also; Year: 1935; Job: 8-9-49" -- on envelope front. "Operator's Report Name: Joe; 10 Original Photographs-- At Studio: 8x10 @ 3.50; Charged on Job 8-12-60; Amount: 35.00; Extra Charges: Lansdale" -- on envelope back.
DOI: 10.25549/whit-c170-91879
title: Elks Club officers, Southern California, 1940

description: Photograph of Elks Club officers, Southern California, 1940. "Date: Thurs[day]; Time: 11:30 A. M.; Operator: Dean; Meet: Miss Dyott; For: Elks Club; At: Sec[re]t[ar]y's office; Job: Group of 5 men; Deliver to: Miss Dyott; Print Order: 1- 8x10, gl[ossy]; Promised: Fri. A. M." -- on card front. "In city; Day: 1; No. of Negs.: 1; Illumination used: synchroflash; Charge to: Elks Club" -- on card back. "Subject: Elks Club Officers; Client: Elks Club, Miss Dyott; Original Print Order: 1; Size: 8x10; Finish: gl[ossy]; Job: 4-18-192; Year: 1940" -- on envelope front. "Operator's Report Name: Dean; Original Photographs-Size: 1 - 8x10 int.; Amount: 3.50" -- on envelope back.
DOI: 10.34973/s0fm-3e10
title: THE COGNITIVE EFFECTS OF A PROMISED BONUS DO NOT DEPEND ON DOPAMINE SYNTHESIS CAPACITY

description: Reward motivation is known to enhance cognitive control. However, detrimental effects have also been observed, which have been attributed to overdosing of already high baseline dopamine levels by further dopamine increases elicited by reward cues. Aarts et al. (2014) indeed demonstrated, in 14 individuals, that reward effects depended on striatal dopamine synthesis capacity, measured with [18F]FMT-PET: promised reward improved Stroop control in low-dopamine individuals, while impairing it in high-dopamine individuals. Here, we aimed to assess this same effect in 44 new participants, who had previously undergone an [18F]DOPA-PET scan to quantify dopamine synthesis capacity. This sample performed the exact same rewarded Stroop paradigm as in the prior study. However, we did not find any correlation between reward effects on cognitive control and striatal dopamine synthesis capacity. Critical differences between the radiotracers [18F]DOPA and [18F]FMT are discussed, as the discrepancy between the current and our previous findings might reflect the use of the potentially less sensitive [18F]DOPA radiotracer in the current study.
DOI: 10.25549/whit-c170-71878
title: Dufay color shots, Edward & beans, Southern California, [s.d.]

description: 10 photographs in color of Griffith Park Observatory scenes, Los Angeles, 12 photographs in color of home, 1 photograph in color of drawing of mission, 1 photograph in color of grocery store bean stock, 3 photographs in color of dog, 9 photographs in black and white of boys riding go-kart, Southern California. "Subject: Whittington; Remarks: Dufay Color Shots, Edward & Beans; No. 10" -- on envelope. "Edward and His Beans, No. 10" -- on sleeve 1. "Whittington, Dufay Color Shots, No. 10" -- on sleeve 2.
DOI: 10.25549/whit-c170-91999
title: Foot in door, Southern California, 1940

description: 3 photographs of foot in door, Southern California, 1940. "Subject: Foot in door; Agency: Crippen-Crosby; Client: Ward Heater; Original Print Order: Sat. A. M., 1 - #3; Size: 8x10; Finish: gl[ossy]; Job: 5-16-110; Year: 1940" -- on envelope front. "Operator's Report Name: Joe; 3 Original Photographs-At Studio: 8x10; Amount: 7.50; Extra Charges: #4898" -- on envelope back.
DOI: 10.25549/whit-c170-91265
title: Copies for large book display, Southern California, 1940

description: 5 photographs of copies for large book display, Southern California, 1940. "Subject: copies for large book display; Client: Curtiss-Wright Tech[nologies]; Job: 5-10-85; Year: 1940" -- on envelope front. "5 Copies-(Print Extra) @ 1.00; Amount: 5.00" -- on envelope back.
DOI: 10.25549/whit-c170-91262
title: Copies for large book display, Southern California, 1940

description: 5 photographs of copies for large book display, Southern California, 1940. "Subject: copies for large book display; Client: Curtiss-Wright Tech[nologies]; Job: 5-10-85; Year: 1940" -- on envelope front. "5 Copies-(Print Extra) @ 1.00; Amount: 5.00" -- on envelope back.
DOI: 10.34973/vz46-0h59
title: Methylphenidate boosts choices of mental labor over leisure depending on striatal dopamine synthesis capacity

description: The cognitive enhancing effects of methylphenidate are well established, but the mechanisms remain unclear. We recently demonstrated that methylphenidate boosts cognitive motivation by enhancing the weight on the benefits of a cognitive task in a manner that depended on striatal dopamine. Here we considered the complementary hypothesis that methylphenidate might also act by changing the weight on the opportunity cost of a cognitive task, that is, the cost of foregoing alternative opportunity. To this end, fifty healthy participants (25 women) completed a novel cognitive effort discounting task that required choices between task and leisure. They were tested on methylphenidate, placebo as well as the selective D2-receptor agent sulpiride, the latter to strengthen inference about dopamine receptor selectivity of methylphenidate’s effects. Furthermore, they also underwent an [18F]DOPA PET scan to quantify striatal dopamine synthesis capacity. Methylphenidate boosted choices of cognitive effort over leisure across the group, and this effect was greatest in participants with more striatal dopamine synthesis capacity. The effects of sulpiride did not reach significance. This study strengthens the motivational account of methylphenidate’s effects on cognition and suggests that methylphenidate reduces the cost of mental labor by increasing striatal dopamine.
DOI: 10.25549/whit-c170-90173
title: Publicity shots, pilgrimage play, Southern California, 1940

description: 11 photographs of pilgrimage play, Southern California, 1940. "Subject: Publicity shots; Client: Pilgrimage Play, 2580 No[rth] Highland, Gene Goch; Original Print Order: 1 ea[ch]; Size: 8x10; Finish: gl[ossy]; Re-Order: 2 #4, 1 #4; Size: 8x10; Finish: gl[ossy], enlarge; Job: 6-24-140; Year: 1940" -- on envelope front. "Operator's Report Name: Dick & Ed; 11 Original Photographs-Size: 8x10; Amount: 25.00" -- on envelope back.
DOI: 10.34973/vjwg-0214
title: Striatal dopamine synthesis capacity reflects smartphone social activity

description: Ubiquitous smartphones and intensive use of social media have prompted speculation about how smartphone use patterns relate to reward processing mechanisms. Here, we leverage day-to-day logs of natural, unconstrained smartphone behavior and establish a link between the intensity of smartphone social activity, and striatal dopamine synthesis capacity using [18F]-DOPA PET in (N=22) healthy adult humans. Specifically, we find that a higher proportion of social app interactions correlates with lower dopamine synthesis capacity in the bi-lateral putamen. Permutation tests and penalized regressions provide evidence that this link between dopamine synthesis capacity and social versus non-social smartphone taps is specific. These observations provide a key empirical grounding for current speculations about dopamine's role in digital social behavior and highlight the potential of naturalistic smartphone behavior as an index of neuromodulatory function.
DOI: 10.25549/whit-c170-90171
title: Publicity shots, pilgrimage play, Southern California, 1940

description: 11 photographs of pilgrimage play, Southern California, 1940. "Subject: Publicity shots; Client: Pilgrimage Play, 2580 No[rth] Highland, Gene Goch; Original Print Order: 1 ea[ch]; Size: 8x10; Finish: gl[ossy]; Re-Order: 2 #4, 1 #4; Size: 8x10; Finish: gl[ossy], enlarge; Job: 6-24-140; Year: 1940" -- on envelope front. "Operator's Report Name: Dick & Ed; 11 Original Photographs-Size: 8x10; Amount: 25.00" -- on envelope back.
DOI: 10.34973/bc23-mz79
title: Striatal dopamine dissociates methylphenidate effects on value-based versus surprise-based reversal learning

description: Psychostimulants such as methylphenidate are widely used for their cognitive enhancing effects, but there is large variability in the direction and extent of these effects. We tested the hypothesis that methylphenidate enhances or impairs reward/punishment-based reversal learning depending on baseline striatal dopamine levels and corticostriatal gating of reward/punishment-related representations in stimulus-specific sensory cortex. Young healthy adults (N=100) were scanned with functional magnetic resonance imaging during a reward/punishment reversal learning task, after intake of methylphenidate or the selective D2/3-receptor antagonist sulpiride. Striatal dopamine synthesis capacity was indexed with [18F]DOPA positron emission tomography. Methylphenidate improved and sulpiride decreased overall accuracy and response speed. Both drugs boosted reward versus punishment learning signals to a greater degree in participants with higher dopamine synthesis capacity. By contrast, striatal and stimulus-specific sensory surprise signals were boosted in participants with lower dopamine synthesis. These results unravel the mechanisms by which methylphenidate gates both attention and reward learning.
DOI: 10.25549/whit-c170-90267
title: Banquet and small groups, 6714 Hollywood Boulevard, Los Angeles, CA, 1940

description: 3 photographs of men at banquet, Southern California, 1940. "Date: Thursday, May 23; Time: 9 pm; Operator: Dean; [ilg] 5229 or [ilg] 2144; Meet: Mr. Frank L. Seabott; For: Seabott Hardware, 169 No[rth] La Brea; At: 6714 Holly[wood] B[ou]l[e]v[ar]d; Job: Banquet group at table. around 90, also may want small group and officers and directors. take graphic for maybe action [ilg] - talking, also know Builders - Hardware Assoc[iation], 8x10, note - Give him an extra print [ilg]atio; Order No.: Mr. Seabott" -- on card front. "In city; Night: 2; No. of Negs.: 4; Illumination Used: 1 - 8x10, large flash bulb 3 syncro; 7.50, 10" -- on card back. "Subject: Banquest & small groups; Agency: Seabott & Hardware Co[mpany], F. L. Seabott, 169 No[rth] La Brea; Client: Builders Hardware Association; Original Print Order: 1 ea[ch]; Size: 8x10; Finish: gl[ossy]; Re-Order: 3 ea[ch], 1 ea[ch]; Size: 8x10; Finish: gl[ossy]; Job: 5-23-157; Year: 1940" -- on envelope front. "Operator's Report Name: Dean & Ed; 4 Original Photographs-Size: 8x10: Amount: 17.50" -- on envelope back.
DOI: 10.34973/1ra6-ma06
title: Dopamine Promotes Cognitive Effort by Biasing the Benefits Versus Costs of Cognitive Work

description: Stimulants like methylphenidate are increasingly used for cognitive enhancement, but precise mechanisms are unknown. We found that methylphenidate boosts willingness to expend cognitive effort by altering the benefit-to-cost ratio of cognitive work. Willingness to expend effort was greater for participants with higher striatal dopamine synthesis capacity, while methylphenidate and sulpiride – a selective D2 receptor antagonist – increased cognitive motivation more for participants with lower synthesis capacity. A sequential sampling model informed by momentary gaze revealed that decisions to expend effort are related to amplification of benefit-versus-cost information attended early in the decision process, while the effect of benefits is strengthened with higher synthesis capacity and by methylphenidate. These findings demonstrate that methylphenidate boosts the perceived benefits-versus-costs of cognitive effort by modulating striatal dopamine signaling.
DOI: 10.25549/whittington-ouc12203106
title: Motoring: husband and wife in car, Los Angeles, Calif., 1940

description: 3 photographs of a male and female model in the driver and passenger seats of an automobile, Los Angeles, California, 1940 November 1.
DOI: 10.34973/peg8-xy67
title: Disentangling the neuronal mechanisms of motivational biases of decision making - paper 2

description: This is version 2 of this collection, published under a different licence (RU-HD-1.1) which allows for easier reuse by other researchers without manual approval by one of the managers of this collection.

This collection contains analysis code, pre-processed data, and results (behavior, EEG, (f)-MRI) on a project conducted at the Donders Centre for Cognitive Neuroimaging, Radboud University, Nijmegen, the Netherlands, to understand the origin (and control over) Pavlovian response biases and learning biases in decision-making.
This collection focus on learning biases and processes at outcome receipt.
DOI: 10.25549/whit-c170-90347
title: Housewarming day and general interiors and exteriors, Southern California, 1940

description: 10 photographs of house warming day, Southern California, 1940. "Subject: House warming [sic] day and general interiors, ext[erior]s, etc; Client: Cherry-Burrell Corp[oration], 4621 Pacific B[ou]l[e]v[ar]d, Mr. Ott; 65.30; 1 to 10 in are 5x7s, 10 to 19 are 8x10; Classifications: also 8x10; Original Print Order: 1 ea[ch], 1 #1, 3, 8, 14, 2 #6, 18, 3 #9, 10, 4 #17, 6 #2, 19, 10 #15; Size: 8x10; Finish: gl[ossy]; extra prints, 22 @ 40¢ ea[ch], 21 @ 50¢ ea[ch]; Job: 6-7-40; Year: 1940" -- on envelope front. "Operator's Report Name: Dean, Dick; 18 Original Photographs-Size: 16- 8x10 int, 2 8x10 ext - seperate [sic] trip, 10 4x5 @ 2.50 - 25.00, 2 ext @ 2.00 - 4.00, 2 int @ 3.50 - 7.00, 4 int @ 2.50 - 10.00, 46.00; Amount: 46.00; Extra Charges: P3013" -- on envelope back.
DOI: 10.25549/whit-c170-74991
title: Burton Churchill and wife at Santa Fe Depot, Southern California, 1927

description: 3 photographs of Burton Churchill and wife at Santa Fe Depot, Southern California, 1927. "73-22-81; 1927; Hollywood Playhouse; Burton Churchill & Wife at Santa Fe Depot" -- on envelope.
DOI: 10.6084/m9.figshare.25792924.v1
title: A non-isolated extended voltage gain quadratic boost converter with reduced device voltage stress and continuous input current

description: This article presents an improved model of a high voltage gain DC-DC converter topology. The voltage gain of the proposed topology is extended using a newly structured cascaded boost converter with voltage doubler cells along with the Super Luo structure in the network. The ultimate aim is to improve the output voltage gain of the proposed converter to a higher level with a lower duty cycle. Additionally, the design considerations minimize the voltage stress of the components (diodes, capacitors, and semiconductor switches) compared to the conventional topology. Moreover, the proposed topology ensures a continuous input current to the structure. Mathematical modeling is developed using steady-state analysis, and the results are analyzed using the MATLAB/Simulink. Finally, the proposed converter provides a high gain, that is, 10, at a lower duty cycle of 0.32 with reduced voltage stress on the components.
DOI: 10.34973/2t72-bj41
title: Disentangling the neuronal mechanisms of motivational biases of decision making

description: This collection contains analysis code, pre-processed data, and results (behavior, EEG, (f)-MRI) on a project conducted at the Donders Centre for Cognitive Neuroimaging, Radboud University, Nijmegen, the Netherlands, to understand the origin (and control over) Pavlovian response biases and learning biases in decision-making.
This collection focus on response biases and processes at cue onset and around the response.
DOI: 10.25549/whit-c170-99235
title: Construction of gas pipe line on La Tijera Blvd. (welding, cutting, etc.), Los Angeles County, Calif., 1940

description: 7 photographs of men working with tools in a ditch with a vehicle beside a road, with large segments of pipe, Los Angeles County, California, 1940 November 20.
DOI: 10.34973/pezs-pw62
title: Disentangling the neuronal mechanisms of motivational biases of decision making - raw data

description: This collection contains raw data (behavior, EEG, (f)-MRI) on a project conducted at the Donders Centre for Cognitive Neuroimaging, Radboud University, Nijmegen, the Netherlands, to understand the origin (and control over) Pavlovian response biases and learning biases in decision-making.
There will be separate collections for published papers containing analysis code, pre-processed data, and results.
DOI: 10.34973/tdm3-2w47
title: Frontal network dynamics reflect neurocomputational mechanisms for reducing maladaptive biases in motivated action

description: Motivation exerts control over behavior by eliciting Pavlovian responses, which can either match or conflict with instrumental action. We can overcome maladaptive motivational influences, putatively through frontal cognitive control. However, the neurocomputational mechanisms subserving this control are unclear; does control entail upregulating instrumental systems, downregulating Pavlovian systems, or both? We combined EEG recordings with a motivational Go/NoGo learning task (N=34), where multiple Go options enabled us to disentangle selective action learning from non-selective Pavlovian responses. Midfrontal theta-band (4-8Hz) activity covaried with the level of Pavlovian conflict, and was associated with reduced Pavlovian biases, rather than reduced instrumental learning biases. Motor and lateral prefrontal regions synchronized to the midfrontal cortex, and these network dynamics predicted the reduction of Pavlovian biases over and above local, midfrontal theta activity. This work links midfrontal processing to detecting Pavlovian conflict, and highlights the importance of network processing in reducing the impact of maladaptive, Pavlovian biases.
DOI: 10.25549/whit-c170-99226
title: Armistice Day Parade, M. L. Polen 73rd Squadron, Moffet [sic] Field, Cal. flags, Los Angeles, Calif., 1940

description: 14 photographs of a parade and ceremonies in the Los Angeles Memorial Coliseum, Los Angeles, California, 1940 November 11. Images include men in kilts with bagpipes, drummers leading columns of men, and displays of flags. Editor's note: the photographer’s job number indicates the date of 1940 November 12.
DOI: 10.25549/whit-c170-99827
title: [Spanish dancer entertains on Olvera Street], Los Angeles, Calif., 1939

description: 22 photographs showing a woman in traditional Mexican clothing playing the guitar and posing with a wagon and other artifacts on Olvera Street in Los Angeles, California, 1939 June. The inside of a door in negative no. 17 has a sign mentioning "The Sketchpad Parade."